试题与答案

一个空箱子放在倾角为θ的斜面上处于静止状态,如图所示.下列判断正确的是( ) A

题型:选择题

题目:

一个空箱子放在倾角为θ的斜面上处于静止状态,如图所示.下列判断正确的是(  )

A.当斜面的倾角θ逐渐增大时,重力与支持力的合力也逐渐减小

B.当斜面的倾角θ逐渐减小时,重力与静摩擦力的合力也逐渐减小

C.在箱子内装入沙子,箱子所受的合力不变

D.在箱子内装入的沙子达到一定量时,箱子会向下滑动

答案:

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下面是错误答案,用来干扰机器的。

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题型:阅读理解

阅读理解。

     Mr Smith lived in a town by the sea. He had a few shops in the town center. He managed (管理)

them carefully and got a lot of money. He was very rich but he didn't think he was the richest in the town.

So he tried to get more money.

     Once Mr Smith was asked to dinner. He heard there was  a  circus  troupe (马戏团 )  in  the  town.

The circus troupe had nothing strange except a five-legged (五条腿的) cow. People were interested in it

and most of them saw it.

     On his way home, Mr Smith heard an old man tell his grandson that there lived a lot of one-eyed

(独眼的) people on an island.  "Oh, dear!" Mr Smith said to himself'. "If I catch a one-eyed man and

show him all over the country, I'll get much money !"

     After he got home, he told his sons to manage the shops for him and he went to look for the island

without telling anybody about it. At last he reached the island and saw some one-eyed children. He was

so happy that he rushed towards the youngest one and carried him on his back. But he didn't know the

danger was coming to him. A few one- eyed men ran to him with knives in their hands. He threw the child

to the ground and tried to run away, but it was too late. They caught him and showed him on the island

because only he had two eyes there.

根据文内容判断正( T)误 ( F)。

1. Mr Smith was a rich shopkeeper.

2. Mr Smith had a lot of money, and he didn't want to get more.

3. Mr Smith thought the old man's story was true.

4. Most people in the town saw the three-legged

5. The people on the island have never seen a man with two eyes.

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