Although we produce carbon when we breathe, the carbon we produce is much less than _________ produced by a car.

A．it

B．the one

C．what

D．that

He not only helped his own family, but he also _________ a helping hand to many other men less fortunate than himself.

A．brought out

B．took out

C．gave out

D．held out

Wang says she stopped allowing people to sign up to ________homeless children after the list neared two thousand people.

A．adopt

B．adapt

C．adjust

D．appoint

It was unbelievable that the little boy managed to reach the final destination, ________ drive a car.

A．let go

B．let down

C．let alone

D．let off

I was thinking of going to see Andrew when who  appear but Andrew himself.

A．would

B．should

C．could

D．might

A case of suspected food poisoning in a kindergarten in Liaoning Province has led to several children ________ to hospital.

A．being sent

B．sent

C．sending

D．to be sent

I went along thinking nothing  , only looking at things around me.

A．in brief	B．in doubt
C．in particular	D．in need

—Are you happy with the laboratory?
—Not a little. We can’t have ________.

A．a worse one

B．a nicer one

C．so bad one

D．so nice one

We should place ________ emphasis on development and security, and develop nuclear energy on the base of security.

A．equal	B．central
C．superior	D．maximum

While working outdoors, Tom was ________ by the heat and fell to the ground, unconscious.

A．hit

B．defeated

C．overcome

D．burst

The family with the aim of travelling by plane ________ more than four times what it was several years ago.

A．have increased

B．has increased

C．were increasing

D．was increasing

The old man _________ buried underground for ever but for the timely rescue.
A. had been B. would have been C. will be    D. would be

It’s on such occasions ________ his classmates get together that he misses his teachers.

A．that	B．whether
C．as	D．when

_________ the reason, research shows that in the end, the English saying, “Laughter is the best medicine”, may be true after all.

A．Whichever

B．Whatever

C．No matter which

D．What

－Your lateness today really impressed our interviewer.
－________, Mike, and shut up!

A．You got me

B．Never mind

C．Do me a favor

D．Forgive me

   Everybody sleeps，but what people stay up late to catch or wake up early in order not to miss varies by culture.

From data collected，it seems the things that cause us to lose the most sleep，on average，are sporting events，time changes，and holidays.

Around the world，people change sleep patterns thanks to the start or end of daylight-saving time（夏令时间）. Russians，for example，began to wake up about a half-hour later each day after President Vladimir Putin shifted the country permanently to“winter time”starting on October 26.

Russia's other late nights and early mornings generally correspond（相一致）to public holidays. On New Year's Eve，Russians have the world's latest bedtime，hitting the hay at around 3:30 a. m.

Russians also get up an hour later on International Women's Day，the day for treating and celebrating female relatives.

Similarly，Americans' late nights，late mornings，and longest sleep fall on three-day weekends.

Canada got the least sleep of the year the night it beat Sweden in the Olympic hockey（冰球）final.

The World Cup is also chiefly responsible for sleep deprivation. The worst night for sleep in the U. K. was the night of the England-Italy match on June 14. Brits stayed up a half-hour later to watch it，and then they woke up earlier than usual the next morning thanks to summer nights，the phenomenon in which the sun barely sets in northern countries in the summertime. That was nothing，though，compared to Germans，Italians，and the French，who stayed up around an hour and a half later on various days throughout the summer to watch the World Cup.

It should be made clear that not everyone has a tool to record their sleep patterns；in some of these nations，it's likely that only the richest people do. And people who elect to track their sleep may try to get more sleep than the average person. Even if that's the case，the above findings are still striking. If the most health-conscious among us have such deep swings（明显改变）in our sleep levels throughout the year，how much sleep are the rest of us losing？

【小题1】What do we learn about the Russians regarding sleep?
A. They don't fall asleep until very late.
B. They don't sleep much on weekends.
C. They sleep longer than people elsewhere.
D. They get less sleep on public holidays.
【小题2】The underlined word“deprivation”in the last paragraph but one means ___________.
A. depression B. loss
C. observation     D. trouble
【小题3】What is the most probable reason for some rich people to use a tool to record their sleep patterns?
A. They have trouble falling asleep.
B. They are involved in sleep research.
C. They want to get more sleep.
D. They want to go to bed on regular hours.
【小题4】What does the author imply in the last paragraph?
A. Sleeplessness does harm to people's health.
B. It is important to study our sleep patterns.
C. Few people really know the importance of sleep.
D. Average people probably sleep more than the rich.