Fleas are perfectly designed by
nature to feast on anything containing blood. Like a shark in the water or a
wolf in the woods, fleas are ideally equipped to do what they do, making them
very difficult to defeat. The bodies of these tiny parasites are extremely
hardy and well-suited for their job.
A flea has a very hard exoskeleton,
which means the body is covered by a tough, tile-like plate called a sclerite.
Because of these plates, fleas are almost impossible to squish. The
exoskeletons of fleas are also waterproof of fleas are also waterproof and shock
resistant, and therefore fleas are highly resistant to the sprays and chemicals
used to kill them.
Little spines are attached to his
plate. The spine the flea scurries through an animal’s fur in – search of
grooming pet tries to pull a flea off through the hair coat, these spines will
extend and stick to the fur like Velcro.
Fleas are some of the best jumpers
in the natural world. A flea can jump seven inches, or 150 times its own
length, either vertically or horizontally. An equivalent jump for a person
would be 555 feet, the height of the Washington Monument. Fleas can jump 30,000
times in a row without stopping, and they are able to accelerate through the
air at an incredibly high rate – a rate which is over ten times what humans can
withstand in an airplane.
Fleas have very long rear legs with
huge thigh muscles and multiple joints. When they get ready to jump. They fold their
long legs up and crouch like a runner on a staring block. Several of their
joints contain a protein called resilin, which helps catapult fleas into the
air as they jump, similar to the way a rubber band provides momentum to a
slingshot. Outward facing claws on the bottom of their legs grip anything they
touch when they land.
The adult female flea mates after
her first blood meal and begins producing eggs in just 1 to 2 days. One flea
can lay up to 50 eggs in one day and over 2,000 in her lifetime. Flea eggs can
be seen with the naked eye, but they are about the size of a grain of salt. Shortly
after being laid, the eggs begin to transform into cocoons. In the cocoon
state, fleas are fully developed adults, and will hatch immediately if
conditions are favorable. Fleas can detect warmth, movement, and carbon dioxide
in exhaled breath, and these three factors stimulate them to emerge as new
adults. If the flea does not detect appropriate conditions, it can remain
dormant in the cocoon state for extended periods. Under ideal conditions, the
entire life cycle may only take 3 weeks, so in no time at all, pets and homes
can become infested.
Because of these characteristics,
fleas are intimidating opponents. The best way to control fleas, therefore, is
to take steps to prevent an infestation from ever occurring.
It can be inferred that fleas will
emerge from eggs as adults
The Baxter house is located at the
end of the street. This house sits farther back from the curb than the other
houses. It is almost difficult to see from the road without peering behind the
deformed oak tree that has obscured it for years. Even so, the Baxter house
stands out from the other houses on the street. It is tall and white. However,
this white is no longer pristinely white, but a dingy grayish cram color. Long
vines hang from the tattered roof. The Baxter house is two stories tall and has
a large yard in the back that has never been mowed. The other houses on the
street are a mere one story and have been painted a variety of colors. The
newer, single story properties all appear to have been built around the same time;
the yards mostly being of the same size, and the houses appearing to be clones
of one another. Aside from the Baxter house at the end, this street is a
perfect slice of middle America. The inhabitants of the other houses wonder who
lives in the ancient, dilapidated house at the end of the street.
Based on its use in the passage,
which of the following statements accurately describes something that has been ‘obscured’?
The history of literature really began was the earliest of
the arts. Man danced for joy round his primitive camp fire after the defeat and
slaughter of his enemy. He yelled and shouted as he danced and gradually the
yells and shouts became coherent and caught the measure of the coherent and
caught the measure of the dance and thus the first war song was sung. As the
idea of God developed prayers were framed. The songs and prayers became
traditional and were repeated from one generation to another, each generation
adding something of its own. As man slowly grew more civilized, he was
compelled to invent some method of writing by three urgent necessities. There
were certain things that it was dangerous to forget and which, therefore, had
to be recorded. It was often necessary to communicate with person who were some
distance away and it was necessary to protect one’s property by making tools,
cattle and so on, in some distinctive manner. So man taught himself to write
and having learned to write purely for utilitarian reasons he used this new
method for preserving his war songs and his prayers. Of course, among these
ancient peoples, There were only a very few individuals who learned to write,
and only a few could read what was written.
The first war-song
Recent advances in science and technology have made it
possible for geneticists to find out abnormalities in the unborn foetus and
take remedial action to rectify some defects which would otherwise prove to be
fatal to the child. Though genetic engineering is still at its infancy,
scientists can now predict with greater accuracy a genetic disorder. It is not
yet an exact science since they are not in a position to predict when exactly a
genetic disorder will set in. While they have not yet been able to change the
genetic order of the gene in germs, they are optimistic and are holding out
that in the near future they might be successful in achieving this feat. They
have, however, acquired the ability in manipulating tissue cells. However,
genetic mis-information can sometimes be damaging for it may adversely affect
people psychologically. Genetic information may lead to a tendency to brand
some people as inferiors. Genetic information can therefore be abused and its
application in deciding the sex of the foetus and its subsequent abortion is
now hotly debated on ethical lines. But on this issue geneticists cannot be
squarely blamed though this charge has often been leveled at them. It is mainly
a societal problem. At present genetic engineering is a costly process of
detecting disorders but scientists hope to reduce the costs when technology
becomes more advanced. This is why much progress in this area has been possible
in scientifically advanced and rich countries like the U.S.A., U.K. and Japan.
It remains to be seen if in the future this science will lead to the
development of a race of supermen or will be able to obliterate disease from
this world.
Why, according to the author, is genetic misinformation
severely damaging?
But I do recommend some game as a part of
recreation. As long as I could see to play and sufficient tennis, I enjoyed
immensely the game of real or court skill, a very ancient game, requiring activates
as well as some pride, because for the first time, at any rate in the recent
history of the game, an amateur is champion of the sometimes criticized for
paying too much attention to games. Football is a national game of America as
well as in England but I do not suppose that either you or we think that our soldiers
fought any worse in the war of having been fond of football. I put games definitely
as a desirable part of recreation, and I would say: have one or more games of
which you are fond, but let them have any rate in youth be activity of the
whole body, as well as skill,
Sport shall be mentioned next. I have had a
liking for more than one form of sport, but an actual passion for salmon and
trout fishing. Salmon fishing, as I have enjoyed it, fishing not from a boat
but from one’s feet, either on the bank or wading deep in the stream, is a
glorious and sustained exercise for the whole body, as well as being an
exciting-sport; but many of my friends do not care for it. To them, I say, as
one who was fond of George Meredith’s Novels once said to be man who complained
that he should not read them, ‘why should you?’ if you do not care for fishing,
do not fish. Why should you? But if we are to be one equal term and you are be
one the same happy level as I hav3e been, then find something for yourself
which you like as much as I like fishing.
According to the writer, games are a part of:
Lilly loves her town. She loves
the mall. She loves the parks. She also loves her school. Most of all, though,
Lilly loves the seasons. In her old town, it was hot all of the time.
Sometimes it is cold in Lilly’s
new town. The cold season is in winter. Once in a while it snows. Lilly has
never seen snow before. So far her, the snow is exciting as well as very
beautiful. Lilly has to wear gloves to keep her hands warm. She also wear a
scarf around her neck.
In spring, flowers bloom and the
trees turn green with new leaves. Pollen falls on the cars and windowsills and
makes Lilly sneeze. People work in their yards and mow their grass.
In summer, Lilly wears her old
shorts and sandals- the same ones she used to wear in her old town. It is hot
outside, and dogs lie in the shade. Lilly and her friends go to a pool or play
in the water sprinkler. Her father cooks hamburgers on the grill for dinner.
Lilly’s favorite season is autumn.
In autumn, the leaves on the trees turn yellow, gold, red, and orange.
Halloween comes in autumn, and this Lilly’s favorite holiday. Every Halloween,
Lilly wears a costume. Last year she wore a mouse costume. This year she will
wear a fish costume.
One evening in autumn, Lilly and
her mom are on sitting together on the porch. Mom tells Lilly that autumn is
also called “fall”. This is a good idea, Lilly thinks, because in the fall all
of the leaves fall down from the trees.
What is Lilly’s favorite thing
about her new town?
The year 2006 was the golden
anniversary, or the 50th birthday, of the Dwight D. Eisenhower
National System of Interstate and Defense Highways. This system, usually
referred to as The Interstate Highway System, is a system of freeways named
after the U.S. President who supported it. The system is the largest highway
system in the world, consisting of 46,876 miles (75,440 km) of freeways. The
construction of the interstate highway system is an important part of American
history. It has played a major role in preserving and maintaining the America way of life.
The interstate highway system has
several major functions. One of its major functions is to facilitate the distribution of US good. Because the
intestate passes through many downtown areas, it plays an important role in the
distribution of almost all goods in the United States.
Nearly all products travel at least part of the way to their destination on the
Interstate System. Another major function of the interstate is to facilitate
military troop movement to and from airports, seaports, rail terminals and
other military destinations. The Interstate highways are connected to route in
the Strategic Highway Network, which is a system of highways that are vital to the U.S. Department of Defense.
Today, most of the Interstate system
consists of newly constructed highways. The longest section of the Interstate
system runs from Boston, Massachusetts to Seattle, Washington. It covers
3,020.54 miles. The shortest two-digit interstate is from Emery, North Caroline
to Greensboro, North Caroline. It covers only 12.27 miles. All state capitals
except five are served by the system. The five that are not directly served are
Juneau, AK, Dover, DE, Jefferson City, MO, Carson City, NV, and Pierre, SD. The
Interstate Highway System serves almost all major U.S. cities.
EACH Interstate highway is marked
with a red, white, and blue shield with the word “Interstate,” the name of the
state, and the route number. Interstate highways are named with one or
two-digit numbers. North-south highways are designated with odd numbers; east-west highways are
named with even numbers. The north-south Interstate highways begin in the west
with the lowest odd number; the east-west highways begin in the south with the
lowest even numbers. There all mile markers at each mile of the interstate
system, starting at the westernmost or southernmost point on the highway. Every
Interstate highway begins with the number “0”. Interchanges are numbered
according to their location on the highway in relation to mileage; an exit
between milepost 7 and milepost 8 would be designated “Exit 7.” This system
allows drivers estimate the distance to a desired exit, which a road is leading
off the highway. Despite the common acceptance of the numbering system on the
Interstate highways, some states have adopted different numbering systems. For
example, a portion of the Interstate 19 in Arizona is measured in kilometers
instead of miles since the highway goes south to Mexico.
Since the Interstate highways are
freeways-highways that do not have signs and cross streets – they have the
highest speed limits in the nation. Most interstate highways have speed limits
between 65 – 75 miles per hour (105 – 120 kilometers per hour), but some areas
in Texas and Utah have an 80 mile-per-hour (130 kilometer-per-hour) speed
limit.
The federal government primarily
funds interstate highways. However, they are owned and operated by the
individual states or toll authorities in the states. The federal government
generally funds up to 90% of the cost of an Interstate highway, while the
states pay the remainder of the cost.
Something vital is very
Arrowheads, which are ancient
hunting tools, are often themselves ‘hunted’ for their interesting value both
as artifacts and as art. Some of the oldest arrowheads in the United States
date back 12,000 years. They are not very difficult to find. You need only to
walk with downcast eyes in a field that has been recently tilled for the spring
planting season, and you might find one.
Arrowheads are tiny stones or pieces
of wood, bone, or metal which have been sharpened in order to create a tipped
weapon used in hunting. The material is honed to an edge, usually in a
triangular fashion, and is brought to a deadly tip. On the edge opposite the
tip is a flared tail. Though designs vary depending on the region, purpose, and
era of the arrowhead’s origin, the tails serve the same purpose. The tail of
the arrowhead is meant to be strapped onto a shaft, which is a straight wooden
piece such as a spear or an arrow. When combined, the arrowhead point and the
shaft become a lethal projectile weapon to be thrown by arm or shot with a bow
at prey.
Indian arrowheads are important
artifacts that give archeologists (scientists who study past human societies)
clues about the lives of Native Americans. By analyzing an arrowhead’s shape,
they can determine the advancement of tool technologies among certain Native
American groups. By determining the origin of the arrowhead material (bone,
rock, wood, or metal), they can trace the patterns of travel and trade of the
hunters. By examine the location of the arrowheads, archeologists can map out
hunting grounds and other social patterns.
Arrowheads are commonly found
along riverbanks or near creek beds because animals drawn to natural water sources
to sustain life were regularly found drinking along the banks. For this reason,
riverbeds were a prime hunting ground for the Native Americans. Now, dry and
active riverbeds are prime hunting grounds for arrowhead collectors.
Indian arrowheads are tiny pieces
of history that fit in the palm of your hand. They are diary entries in the
life of a hunter. They are museum pieces that hide in the dirt. They are
symbolic of the eternal struggle between life and death.
In the final
paragraph, the author writes, “They are museum pieces symbolic of the eternal
struggle between life and death.” Which of the following is the best way to
combine these two sentences, while keeping their original meaning?
It is easy to make delicious-looking hamburger at home. But would this
hamburger still look delicious after it sat on your kitchen table under very
bright lights for six or seven hours? if someone took a picture or made a video
of this hamburger after the seventh hour, would anyone want to eat it? More
importantly, do you think you could get millions of people to pay money for
this hamburger? These are the questions that fast food companies worry about
when they produce commercials or print ads for their products. Video and photo
shoots often last many hours. The lights that the photographers use can be
extremely hot. These conditions can cause the food to look quite unappealing to
potential consumers. Because of this, the menu items that you see in fast food
commercials are probably not actually edible.Let's use the hamburger as an
example. The first step towards building the commercial hamburger is the bun.
The food stylist--a person employed by the company to make sure the products
look perfect--sorts through hundreds of buns until he or she finds one with no
wrinkles. Next, the stylist carefully rearranges the sesame seeds on the bun
using glue and tweezers for maximum visual appeal. The bun is then sprayed with
a waterproofing solution so that it will no get soggy from contact with other
ingredients, the lights, or the humidity in the room.Next, the food stylist
shapes a meat patty into a perfect circle. Only the outside of the meat gets
cooked-the inside is left raw so that the meat remains moist. The food stylist
then paints the outside of the meat patty with a mixture of oil, molasses, and
brown food coloring. Grill marks are either painted on or seared into the meat
using hot metal skewers.Finally, the food stylist searches through dozens of
tomatoes and heads of lettuce to find the best-looking produce.One leaf of the
crispest lettuce and one center slice of the reddest tomato are selected and
then sprayed with glycerin to keep them looking fresh. So the next time you see
a delectable hamburger in a fast food commercial, remember: you are actually
looking at glue, paint, raw meat , and glycerin. Are you still hungry?
Question:
According to the passage, fast food companies use things like glue and glycerin on hamburgers that appear in advertisements because
I. no one actually has to eat the food used in the commercial
II.it is important that people who see advertisement would pay for the food being advertised
III.filming a commercial or a print ad can take a very long time
Paul’s wife knows Paul loves to read cookbooks. She decides to
get him one for his birthday. Paul tells her he will try to make a new recipe
for three days in a row. On Monday, Paul makes blueberry pancakes for
breakfast. He gets the blueberries from the farmers’ market. On Tuesday, Paul
makes beef soup for dinner. He puts in cubes of beef, carrots, and onions. The
recipe calls for cream, but Paul does not cream. He uses water instead. On Wednesday,
Paul makes a tomato salad with cucumbers and onions. He picks the cucumbers and
tomatoes from his garden. He likes this dish best. It was also the easiest for
him to make.
Why doesn’t Paul use cream?
Chocolate – there’s nothing quite like it, is there?
Chocolate is simply delicious. What is chocolate? Where does it come from?
Christopher Columbus was probably the first to take cacao
beans from the New World to Europe in around 1502. But the history of chocolate
goes back at least 4,000 years! The Aztecs, who lived in America, through that
their bitter cacao drink was a divine gift from heaven. In fact, the scientist
Carolus Linnaeus named the plant Theobroma, which means “food of the gods”
The Spanish explorer Hernando Cortex went to America in
1519. He visited the Mexican emperor Montezuma. He saw that Montezuma drank
cacao mixed with vanilla and spices. Cortez took some cacao home as a gift to the
Spanish King Charles. In Spain, people began to drink Cortez’s chocolate in
drink with chili peppers. However, the natural taste of cacao was too bitter
for most people. To sweeten the drink, Europeans added sugar to the cacao
drink. As a sweet drink, it became more popular. By the 17th
century, rich people in Europe were drinking it.
Later, people started using chocolate in pastries, like pies and cakes. In 1828, Dutch chocolate
makers started using a new process for removing the fat from cacao beans, and
getting to the center of the cacao bean. The Dutch chocolate maker Conrad J.
Van Houten made a machine that pressed the fat from the bean. The resulting powder
mixed better with water than cacao did. Now, some call van Houten’s chocolate “Dutch
chocolate.”
It was easy to mix Dutuch chocolate powder with sugar. So
other chocolate makers started trying new recipes that used powdered chocolate. People started
mixing sweetened chocolate with cocoa butter to make solid chocolate bars. In
1849, an English chocolate maker made the first chocolate bar. In the 19th
century, the Swiss started making milk chocolate by mixing powdered milk with
sweetened chocolate. Milk chocolate has not changed much since this process was
invented.
Today, two countries – Brazil and Ivory Coast – account for
almost half the world’s chocolate. The United States imports most of the
chocolate in the world, but the Swiss eat the most chocolate per person. The
most chocolate eaten today is sweet milk chocolate, but people also eat white
chocolate and dark chocolate.
Cocoa and dark chocolate are believed to help prevent heart
attacks, or help keep from happening. They are supposed to be good for the
circulatory system. On the other hand, the high fat content of chocolate can
cause weight gain, which is not good for people’s health. Other health claims
for chocolate have not been proven, but some research shows that chocolate
could be good for the brain.
Chocolate is a popular holiday gift. A popular Valentine’s
Day gift is a box of chocolate candies with a card and flowers. Chocolate is
sometimes given for Christmas and birthdays. Chocolate eggs are sometimes given
at Easter.
Chocolate is toxic to some animals. An ingredient in chocolate
is poisonous to dogs, cats, parrots, small rodents, and some livestock. Their
bodies cannot process some if the chemicals found in chocolate. Therefore, they
should never be fed chocolate.
A divine gift is ..
Paul’s wife knows Paul loves to read cookbooks. She decides to
get him one for his birthday. Paul tells her he will try to make a new recipe
for three days in a row. On Monday, Paul makes blueberry pancakes for
breakfast. He gets the blueberries from the farmers’ market. On Tuesday, Paul
makes beef soup for dinner. He puts in cubes of beef, carrots, and onions. The
recipe calls for cream, but Paul does not cream. He uses water instead. On Wednesday,
Paul makes a tomato salad with cucumbers and onions. He picks the cucumbers and
tomatoes from his garden. He likes this dish best. It was also the easiest for
him to make.
Which dish does Paul like best?
The year 2006 was the golden
anniversary, or the 50th birthday, of the Dwight D. Eisenhower
National System of Interstate and Defense Highways. This system, usually
referred to as The Interstate Highway System, is a system of freeways named
after the U.S. President who supported it. The system is the largest highway
system in the world, consisting of 46,876 miles (75,440 km) of freeways. The
construction of the interstate highway system is an important part of American
history. It has played a major role in preserving and maintaining the America way of life.
The interstate highway system has
several major functions. One of its major functions is to facilitate the distribution of US good. Because the
intestate passes through many downtown areas, it plays an important role in the
distribution of almost all goods in the United States.
Nearly all products travel at least part of the way to their destination on the
Interstate System. Another major function of the interstate is to facilitate
military troop movement to and from airports, seaports, rail terminals and
other military destinations. The Interstate highways are connected to route in
the Strategic Highway Network, which is a system of highways that are vital to the U.S. Department of Defense.
Today, most of the Interstate system
consists of newly constructed highways. The longest section of the Interstate
system runs from Boston, Massachusetts to Seattle, Washington. It covers
3,020.54 miles. The shortest two-digit interstate is from Emery, North Caroline
to Greensboro, North Caroline. It covers only 12.27 miles. All state capitals
except five are served by the system. The five that are not directly served are
Juneau, AK, Dover, DE, Jefferson City, MO, Carson City, NV, and Pierre, SD. The
Interstate Highway System serves almost all major U.S. cities.
EACH Interstate highway is marked
with a red, white, and blue shield with the word “Interstate,” the name of the
state, and the route number. Interstate highways are named with one or
two-digit numbers. North-south highways are designated with odd numbers; east-west highways are
named with even numbers. The north-south Interstate highways begin in the west
with the lowest odd number; the east-west highways begin in the south with the
lowest even numbers. There all mile markers at each mile of the interstate
system, starting at the westernmost or southernmost point on the highway. Every
Interstate highway begins with the number “0”. Interchanges are numbered
according to their location on the highway in relation to mileage; an exit
between milepost 7 and milepost 8 would be designated “Exit 7.” This system
allows drivers estimate the distance to a desired exit, which a road is leading
off the highway. Despite the common acceptance of the numbering system on the
Interstate highways, some states have adopted different numbering systems. For
example, a portion of the Interstate 19 in Arizona is measured in kilometers
instead of miles since the highway goes south to Mexico.
Since the Interstate highways are
freeways-highways that do not have signs and cross streets – they have the
highest speed limits in the nation. Most interstate highways have speed limits
between 65 – 75 miles per hour (105 – 120 kilometers per hour), but some areas
in Texas and Utah have an 80 mile-per-hour (130 kilometer-per-hour) speed
limit.
The federal government primarily
funds interstate highways. However, they are owned and operated by the
individual states or toll authorities in the states. The federal government
generally funds up to 90% of the cost of an Interstate highway, while the
states pay the remainder of the cost.
How does a driver leave an
Interstate highway?