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The Body Clock

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 biological clock.
This body clock programmes us to be sleepy twice a day, between 3-5 am and again between 3-5 pm. Afternoon tea and nap are all cultural responses to our natural biological sleepiness in the afternoon.
One of the major causes of the travellers’ malady known as jet lag is the non-alignment of a person’s internal body clock with clocks in the external world. Crossing different time zones confuses the biological clock,
A. enable us to sleep 6 hours a day.
B. help us adapt to a 24-hour cycle.
C. regulate the body’s functions.
D. interfere with the body’s functions.

[单项选择]
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 biological clock.
The body clock programs us to be sleepy twice a day, between 3-5 am and again between 3-5 pm. Afternoon tea and nap 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 non-alignment of a person’s internal body clock with clocks in the external world. Crossing different time zones confuses the biological clock, whi
A. enable us to sleep 6 hours a day
B. help us adapt to a 24-hour cycle
C. regulate the body’s functions
D. interfere with the body’s functions

[单项选择]Why did the woman go to New York（）
A. To go sightseeing.
B. To have meetings.
C. To promote a new champagne.
D. To join in a training program.

[单项选择]
Why does she want to choose New York to live in A. Because New York is her favorite city. B. Because that’s the place they fall in love. C. Because that’s the place where their parents live.

[单项选择]Why does the man want a one-way ticket to New York
A. He will live in New York forever.
B. He will not do business in Los Angeles.
C. He can’t pay the round trip ticket.
D. He hates Los Angeles and does not want to be here again.

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W: Why didn’t your aunt fly to New York
M: It would have cost $140. The bus fare is only $ 40.

How much did the man’s aunt save（　）.
A. $140.
B. $14.
C. $ 40.
D. $100.

[单项选择]New York is searching for new ways to fight persistent poverty. To encourage families to participate in these programs, the mayor hopes to recruit private donors to provide parents with a cash incentive to make the right choices for their children, making sure they stay in school and sending them to visit health care providers.
The idea is based on a highly successful Mexican antipoverty program, set up in 1997 and known as Oportunidades, which is now being tried by at least 25 other countries. The purpose of this program is to promote education, improve health care, health maintenance, and better nutrition among Mexico’s rural families living in extreme poverty. The program provides education grants, nutritional supplements, education on hygiene(卫生) and nutrition, and cash transfers for food to mothers in participating villages.
Today the program covers one in four Mexican families, helping virtually all the poor families in the country. Families are sent a bimonthly ch
A. Because it increases the income in poor families.
B. Because it forces children in poor families to go to school.
C. Because it reduces the cost of attending school.
D. Because it reduces child labor.