Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.
Why is it that flying to New York from London will leave you feeling less tired than flying to London from New York? The answer may be a clear case of biology not being able to keep up with technology. Deep inside the brain there is a “clock” that governs every aspect of the body’s functioning: sleep and wake cycles, levels of alertness, performance, mood, hormone levels, digestion, body temperature and so on. It regulates all of these functions on a 24-hour basis and is called the circadian clock (from the Latin, circa “about” + dies “day”).
This body clock programmes us to be sleepy twice a day, between 3-5 a.m. and again between 3-5 p.m. Afternoon tea and siesta times are all cultural responses to our natural biological sleepiness in the afternoon. One of the major causes of the travelers’ malady known as jet lag is the nonalignment of a person’s internal body clock with clocks in the external world. Crossing different time zones confuses the circadian clock, which then has to adjust to the new time and patterns of light and activity. To make matters more complex, not all internal body functions adjust at the same rate. So your sleep or wake may adjust to a new time zone at one rate, while your temperature adjusts at a different pace. Your digestion may be on a different schedule altogether.
Though we live in a 24-hour day, the natural tendency of the body clock is to extend our day beyond 24 hours. It is contrary to our biological programming to shrink our day. That is why travelling in a westward direction is more body-clock friendly than flying east. NASA studies of long haul pilots showed that westward travel was associated with significantly better sleep quantity and quality than eastward flights. When flying west, you are “extending” your day, thus travelling in the natural direction of your internal clock. Flying eastward will involve “shrinking” or reducing your day and is in direct opposition to your internal clock’s natural tendency.
One of the more common complaints of travelers is that their sleep becomes disrupted. There are many reasons for this: Changing time zones and schedules, changing light and activity levels, trying to sleep when your body clock is programmed to be awake, disruption of the internal circadian clock and working longer hours. Sleep loss, jet lag and fatigue can seriously affect our ability to function well. Judgment and decision-making can be reduced by 50%, attention by 75 percent, memory by 20 percent and communication by 30 percent. It is often suggested that you adjust your watch as soon as you board a plane, supposedly to try to help you adjust to your destination’s schedule as soon as you arrive. But it can take the body clock several days to several weeks to fully adjust to a new time zone.
On the subject of avoiding jet lag the article_____.
A. proposes gradually adjusting your body clock
B. suggests changing the time on your watch
C. says there is nothing you can do
D. makes no suggestions
Đáp án là B.
Đ4: It is often suggested that you adjust your watch as soon as you board a plane, supposedly to try to help you adjust to your destination’s schedule as soon as you arrive: gợi ý là bạn chỉnh giờ trên đồng hồ ngay khi lên máy bay để thích ứng dần
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Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
It’s only a small flat but it _____my needs perfectly
Mark the letter A, B, C, or D on your answer sheet to show the underlined part that needs correction.
Students in the United States often support themselves by babysitting, working in restaurants, or they drive taxicabs
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
I wish you _____ to the theatre last night, but you didn’t.
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
My teeth were a little yellow so I _____by the dentist
Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.
Mark the letter A, B, C, or D on your answer sheet to indicate the word or phrase that is OPPOSITE in meaning to the underlined part in each of the following questions.
Now when so many frogs were killed, there were more and more insects
Mark the letter A, B, C, or D on your answer sheet to show the underlined part that needs correction.
Although the doctor may be able to diagnose a problem perfect, he still may not be able to find a drug to which the patient will respond
The young woman, _____, was visibly very happy after the birth of her child
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Can you find a place _____ is suitable for all of us?
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Jack went to a party, wearing a _____ bow tie.
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.
Prehistoric horses were far removed from the horses that Christopher Columbus brought on his ships during his second voyage to the New World. Although fossil remains of “dawn horses” have been excavated in several sites in Wyoming and New Mexico, these animal, which were biologically different from contemporary horses, had been extinct several millennia before onset of the Indian era. Although moviegoers visualize an Indian as a horse rider, Indians were not familiar with horses until the Spanish brought them to Mexico, New Mexico, Florida, and the West Indies in 1519. Those that escaped from the conquerors or were left behind became the ancestors of the wild horses that still roam the southwestern regions of the country. The Indian tribe scattered in the western plains began to breed horse about 1600.
The arrival of the horse produced a ripple effect throughout the Great Plains as the Indians living there were not nomadic and engaged in rudimentary farming and grazing land hunting. Tracking stampeding herds of buffalo and elk on foot was not the best way to stock quantities of meat to adequately feed the entire tribe during the winter. However, mounted on horses, the hunting team could cover ground within a substantial distance from their camps and transport their game back to be roasted, dried into jerky, or smoke for preservation. The hunters responsible for tribe provisions stayed on the move almost continuously, replacing their earth-and-sod lodges with tepees. Horses carried not only their riders but also their possessions and booty. The Blackfoot Indians of the Canadian plains turned almost exclusive hunters, and the Crow split off from the mainstream Indian farming in favor of hunting. In fact, some of the Apache splinter groups abandoned agricultural cultivation altogether.
The horse also drastically altered Indian warfare by allowing rapid maneuvering before, during, and after skirmishes. With the advent of the horse, the Apache, Arapahoe, and Cheyenne established themselves as territorial monopoly in the Plains. Because Indians did not have the wheel and had dragged their belongings from one settlement to another, horse also enabled them to become more mobile and expedient during tribal migration. In fact, the Cheyenne abolished the custom of discarding belongings and tepee skins simply because there were no means to transport them.
According to the passage, American Indians_____.
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
I shouldn’t _____ so much coffee last night. I was wide awake till four in the morning
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
They’re staying with us _____ until they can afford a house.
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
He agreed with my opinion that we should not be fully satisfied _____ what he had
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks.
One of the most important (3)_______ of a standardized test is time. You'll only be allowed a certain number of minutes for each section, so it is very important that you use your time (4)_______. The most important time strategy is pacing yourself. Before you begin, take just a few seconds to survey the test, noting the (5)_______of questions and the sections that looks easier than the rest. Then, make a rough time schedule based (6)_______ the amount of time available to you. Mark the halfway point on your test and make a note beside that mark of the time when the testing period is half over.
Once you begin the test, continue moving. If you work slowly in an attempt to (7)_______ fewer mistakes, your mind will become bored and begin to wander. You'll end up with far (8)_______ mistakes if you're not concentrating. If you take too long to answer questions that stump you, you may end up (9)_______ out of time before you finish. So don't stop for difficult questions. Skip them and move on. You can come back to them later (10)_______ you have time. A question that takes you five seconds to answer counts as much as one that takes you several minutes, so pick up the easy points first. (11)_______, answering the easier questions first helps build your confidence and gets you in the testing groove. If you're a little ahead, you know you're on track and may even have a little time left to check your work. If you're a little behind, you have several choices. You can pick up the pace a little, but do this only if you can do it (12)_______.
Điền vào ô số 6