We must keep them away from the wetland ________ protect the wildlife around here.

A. so that B. because of

C. in order to D. in order that

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—Hi, Tim．Huozun’s song Juanzhulian （卷珠簾） ______ great!

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Jack took music than any boy in his class and held a concert successfully.

A．serious B．seriously

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Here is a surprising and important fact: Mental work(腦力勞動(dòng)) alone can’t make us tired. It sounds absurd(荒謬的). But a year ago, scientists tried to find out how long the human brain could work without reaching a stage of fatigue (疲勞). To the amazement of these scientists, they discovered that blood passing through the brain, when it is active, shows no fatigue at all! If we took a drop of blood from a day laborer(工人), we would find it full of fatigue toxins(毒素) and fatigue products. But if we took blood from the brain of an Albert Einstein, it would show no fatigue toxins at the end of the day.

In fact, brain can work as well at the end of eight or even twelve hours of effort as at the beginning. The brain is totally tireless. So what makes us tired?

Some scientists say that most of our fatigue comes from our mental and emotional(情緒的) attitudes(態(tài)度). One of England’s most outstanding scientists, J.A. Hartfield, says, “The greater part of the fatigue is of mental origin(源于精神的). In fact, fatigue of physical origin(源于身體的) is rare.” Dr. Brill, a famous American scientist, goes even further. He says, “One hundred percent of the fatigue of sitting workers in good health is because of emotional problems.”

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1.What surprised the scientists a few years ago?

A. Fatigue toxins could hardly be found in a laborer’s blood.

B. Albert Einstein didn’t feel tired after a day’s work.

C. The brain could work for many hours without fatigue.

D. A mental worker’s blood was filled with fatigue toxins.

2.According to the writer, which of the following can make sitting workers tired?

A. Challenging mental work.

B. Unpleasant emotions.

C. Endless tasks.

D. Physical labor(體力勞動(dòng)).

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B. He doubts them.

C. He argues against them.

D. He is not willing to accept them.

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B. enjoy their work

C. exercise regularly(規(guī)律地）

D. discover fatigue toxins

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I had waited for several weeks without __________ Sam so I e-mailed him again.

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Thanks for ________ me about JSTV’s You Are the One. Meng Fei sounds really excellent.

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Mike wants to go to the library _________ some books.

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Every day in China， about 200 million children go to school．Many of them take school buses．What should we do to keep these students safe on the road?

On April 5， the State Council （國(guó)務(wù)院） published new rules about school bus safety．These new rules are stricter than the old ones.

Under the new rules， local governments must make sure that students go to nearby schools or boarding （寄宿的） schools to reduce traffic risks．Also， local governments must help kids in the countryside reach their school buses.

From now on， school buses have a speed limit （限制） of 80 km/h on highways and 60km/h on normal roads．While on the road， other cars must let school buses go first.

The new rules also say that school buses must never be overloaded （超載的）.

There are many other rules as well．A school bus must have more than seven seats．On each bus， there must be at least one adult to keep an eye on the kids．Each school bus must have a fire extinguisher （滅火器）， a first aid kit （急救箱） and a GPS.

Last year， a series of school bus accidents happened in China．To stop such accidents， the Central Government decided to strengthen （加強(qiáng)） the rules for school buses.

The most serious accident happened in Gansu in November， when a nine-seat minibus crashed （碰撞）．There were 62 children inside， and 21 of them died.

1.What did the State Council publish on April 5?

A．New rules about school bus safety.

B．New rules about students’ safety.

C．New rules about students’ home.

D．New rules about class.

2.Under the new rules， which of the following is NOT true?

A．School buses can go first when there are other cars.

B．School buses must drive 80 km/h or less on highways.

C．School buses must drive 50 km/h or less on normal roads.

D．School buses must have at least one adult to look after the kids.

3.According to the new rules， a school bus must have the following EXCEPT _______.

A．a(chǎn) GPS

B．more than seven seats

C．a(chǎn) parents of one of the students

D．a(chǎn) fire extinguisher and a first aid kit

4.According to the passage， the government made new rules because __________.

A．21 students died in school bus accidents last year

B．school buses in China were not safe enough before

C．200 million children in China go to school by bus every day

D．the government encourages all students to take school buses

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