13．人站在自动扶梯的水平踏板上，随扶梯斜向上匀速运动，如图所示，以下说法正确的是

　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　 (　　 )

　 　　　 A．人受到重力和支持力的作用

　　　 B．人受到重力、支持力和摩擦力的作用

　　　 C．人受到合外力不为零

　　　 D．人受到的合外力方向与速度方向相同

　 14．人们设计了如图所示的安全带以尽可能地减轻猛烈碰撞。假设某

次急刹车时，由于安全带的作用，使质量70kg的乘员的加速度大

小约为6m/s²，此时安全带对乘员的作用力最接近　　　 (　　 )

　　　 A．100N　　　　　　　　　　　　　　　　　　　　　　　　 B．400N　　　　　　　　　

　　　 C．800N　　　　　　　　　　　　　　　　　　　　　　　　　 D．1000N

15. -- What about your classmate, Susan?

-- Our teacher ____ her a good and clever student.

A. regards　 B. believes　 C. suggests　 D. considers

[解析]选D consider as…“认为……是……”，as可省略。

14. The new dress looks wonderful on you ____ the collar.

A. besides　 B. except　 C. beside　 D. except for

[解析]选D“美中不足的是领子”，表示部分修正。

13. Let Harry play with your toys as well. Clare, you must learn to ____.

A. support　 B. care　 C. spare　 D. share

[解析]选D share“分享”；support“支持”；care“在意”；spare“抽出(时间)。节余”。

12. -- How's the young man? -- ____.

A. He's twenty　　　　 B. He's a doctor

C. He is much better　 D. He's David

[解析]选C how is sb. “某人身体如何”。

11. She took ____ in physics and read ____ on the subject.

A. interest; as books many as she could

B. an interest; as many books as she could

C. interested; as many books as she can

D. interests; as books as she could

[解析]选B根据短语搭配和时态一致可知。

10. It has been suggested that the land ____ equally among the peasants.

A. be shared　　　　　 B. should be spared

C. saved　　　　　　　 D. be spent

[解析]选A suggest后用虚拟语气。be shared前可

省略should。

9. The fire ____ for half an hour before the fire fighters arrived.

A. had put out　　　　 B. was put out

C. had been out　　　　 D. had broken out

[解析]选C be out"火熄灭”，表示状态。

8. -- Hello, Mary. I've got a girlfriend.　 -- What's she like?

-- ____.

A. I don't know　　 B. She's like her mother, not father

C. She likes music　 D. Not had! Quite pretty

[解析]选D表外表给人的印象。

7. In our ____ life, English is ____ used.

A. everyday; wide　　 B. everyday; widely

C. every day; wide　　 D. every day; widely

[解析]选B everyday“日常的，每天的”；widely“广泛地”。