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, ...
Trần Đan Phương | Chat Online | |
03/09 22:41:30 (Tiếng Anh - Lớp 12) |
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.
The word “It” in the first paragraph refers to_____.
Lựa chọn một trả lời để xem Đáp án chính xác Báo sai đáp án hoặc câu hỏi |
A. the body clock 0 % | 0 phiếu |
B. the programme 0 % | 0 phiếu |
C. the brain 0 % | 0 phiếu |
D. the function 0 % | 0 phiếu |
Tổng cộng: | 0 trả lời |
Trắc nghiệm liên quan
- 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 ... (Tiếng Anh - Lớp 12)
- 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. (Tiếng Anh - Lớp 12)
- 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 (Tiếng Anh - Lớp 12)
- Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.Mary invited her friend, Sarah, to have dinner out that night and Sarah accepted.Choose the most suitable response to fill in the ... (Tiếng Anh - Lớp 12)
- Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions._____Paul realize that he was on the wrong flight. (Tiếng Anh - Lớp 12)
- Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.The house which was built more than ten years ago is now in bad condition, so it needs _____ for the wedding taking place next month (Tiếng Anh - Lớp 12)
- 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 (Tiếng Anh - Lớp 12)
- Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.The Prime Minister congratulated the team _____winning the match (Tiếng Anh - Lớp 12)
- 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? (Tiếng Anh - Lớp 12)
- Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.It took Ted a long time to get _____the breakup of his marriage (Tiếng Anh - Lớp 12)
Trắc nghiệm mới nhất
- Đọc thầm văn bản sau và trả lời câu hỏi: THUẦN PHỤC SƯ TỬ Ha-li-ma lấy chồng được hai năm. Trước khi cưới, chồng nàng là một người dễ mến, lúc nào cũng tươi cười. Vậy mà giờ đây, chỉ thấy chàng cau có, gắt gỏng. Không biết làm thế nào, ... (Tiếng Việt - Lớp 5)
- Tìm một số biết rằng nếu ta gấp 3 lần số đó rồi cộng với 21,5 rồi trừ đi 1,5 được kết quả là 35,9. Số đó là: (Toán học - Lớp 5)
- Số thích hợp để điền vào ô trống là: 438 : 12 + 3,5 = ? (Toán học - Lớp 5)
- Kết quả của phép tính 7,75 : 2,5 là: (Toán học - Lớp 5)
- Kết quả của phép tính 15 : 0,25 là: (Toán học - Lớp 5)
- Trong 4 giờ ô tô đi được 210 km với vận tốc không đổi. Hỏi mỗi giờ ô tô đi được bao nhiêu ki-lô-mét? (Toán học - Lớp 5)
- Cả 5 con vịt cân nặng 8 kg. Hỏi trung bình mỗi con vịt cân nặng bao nhiêu ki-lô-gam? (Toán học - Lớp 5)
- 15 căn phòng như nhau có diện tích là 1 447,5 m2. Hỏi 8 căn phòng như thế có diện tích là bao nhiêu mét vuông? (Toán học - Lớp 5)
- Một tấm thảm hình vuông có chu vi 2,4 m. Diện tích của tấm thảm đó là: (Toán học - Lớp 5)
- Sợi dây thứ nhất dài 52,5 m, sợi dây thứ hai dài bằng 110 sợi dây thứ nhất. Vậy hai sợi dây dài là: (Toán học - Lớp 5)