5.What does the underlined part “piling on the pounds” in the first paragraph mean?

A.Putting pounds into a pile.

B.Filling in with pounds.

C.Making a lot of money.

D.Gaining body weight.

6.From the passage，we know that .

A.sleeping in the dark must help prevent obesity

B.lighting on the body at night makes people happy

C.night­time light may affect human beings and mice

D.it is easy for women to become fat and have cancer

7.The most possible cause of the interruption of body clock is .

A.the sleep hormone melatonin

B.unhappy feelings

C.man­made light at night

D.glucose intolerance

8.The passage is mainly about .

A.evolutionary past of man

B.obesity and breast cancer

C.different research and conclusions

D.negative effects of night­time light

Ⅱ . 七选五

9

Safety in the highway is not totally out of our hands.Here are four ways we can protect ourselves when we travel.

10 People in small cars are injured more often and more severely than people traveling in large cars.Factories of small cars are strengthening their products’ safety，which helps.But the mix of large cars and small cars on the road is the main reason of the problem.

Being thrown into glass and metal car parts，or being thrown from the car can really hurt or even kill you. 11 The safety belt’s main purpose is to pull you back if your car has a sudden crash with another vehicle or object，or if it rolls over.A belt can reduce the chance of deadly injury by 45% and the chance of serious injury by 50%.

Air bags are important.More than half of all new cars sold have air bags.Air bags provide protection in frontal crashes—the type of crash that kills the most drivers—when they are also wearing safety belts.Most people are demanding air bags in the cars they buy. 12 Effective as they are，they can’t take the place of safety belts.

Drunk driving crashes are less likely to happen if you don’t drink. 13 Many people have realized that drunk driving can lead to death and injury，prison time and other results.There are movements to strengthen penalties (处罚) for drinking and driving.

A.How to Drive Safely

B.You are safer in a large car.

C.How to Protect Ourselves in the Highway

D.Air bags are not installed in all cars.

E.That’s why safety belts should be worn.

F.Drunk driving is the most serious problem.

G.But the protection provided by air bags is limited in side or rear crashes.

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阅读能力专练

Ⅰ . 1.B　[细节理解题。根据第二段最后一句“‘Usually，my biggest challenge is trying to keep them patient，’she says.‘They just have so many burning questions.’”可知学生们经常问太多的问题，这对于Blackwell来说是个挑战。]

2.C　[细节理解题。根据第三段最后两句“When the participants’ curiosity was aroused，the parts of their brains that regulate pleasure and reward lit up.Curious minds also showed increased activity in the brain，which is involved in the creation of memories.”可知选C。]

3.D　[推理判断题。根据第四段中的“Curious brains are better at learning not only about the subject at hand but also dull information.This is a phenomenon teachers can use in the classroom.”可推知，举这个例子的目的是证明好奇心还可以帮助我们学习一些枯燥的知识。]

4.A　[代词指代题。根据倒数第三段最后一句“If we could figure these things out，we could help those who may just seem bored”可知，that problem指代上文的seem bored，故选A。]

5.D　[词义猜测题。根据第一段第一句“...they could also make you fat.”可知，piling on the pounds与make you fat意思相近，故选D。]

6.C　[细节理解题。全文都在讲述夜间光线可能对人类的影响，第五段讲述老鼠也可能受到夜间光线的影响，故选C。]

7.C　[细节理解题。根据第三段中的“One possible explanation is that the light is interrupting the body clock”及最后一段第二句“Artificial light is known to interrupt the body clock...”可知，人体生物钟被打乱的最可能的原因是人造光线，故选C。]

8.D　[主旨大意题。根据文章首段可知，本文主要介绍夜间光线给人体带来的一些负面影响。故选D。]

Ⅱ . 9.C　10.B　11.E　12.G　13.F