问题 选择题

观察洋葱鳞片叶表皮细胞临时装片时,发现视野中有一污点,移动物镜和玻片标本,污点都不移动.则污点在(  )

A.物镜上

B.目镜上

C.反光镜上

D.载玻片上

答案

用显微镜进行观察时,视野中出现了的污点,污点的位置只有三种可能,目镜、物镜或玻片标本,判断的方法是转动目镜或移动玻片.转动目镜污点动就在目镜,不动就不在目镜;移动载玻片,污点移动就在载玻片,不动就不在载玻片;如果不在目镜和载玻片,那就一定在物镜上.移动物镜和玻片标本,污点都不移动.则表明污点在目镜上.

故选B.

阅读理解

We were going to play against a team from a country school.They didn’t come until the last minute. They looked worse than we had thought. They were wearing dirty blue trousers and looked like farm boys.We sat down for a rest. We felt that we didn’t need any practice against a team like that.

The game began. One of us got the ball and he shot a long pass to our forward (前锋). From out of nowhere a boy in an old T-shirt stopped the ball and with beautiful style, he shot and got two points. Then another two points in a minute. Soon the game was all over. We were beaten by the country team.  

After that, we thought a lot. We certainly learned that even though your team is very good, you can’t look down upon the others and still need to do you best. And the most important lesson we learned was: One can’t judge (判断) a person or a team only by their clothes.

小题1: The team from the country were in old clothes so the writer’s team _______.

A.looked down upon them

B.couldn’t win

C.didn’t like the city boy

D.were afraid of them小题2:The country team arrived so late that _________.

A.nobody saw them

B.the writer’s team were angry

C.they had no time to warm up(热身)

D.they looked worse小题3: The team from the country won because _________.

A.they were in old clothes

B.they didn’t practice before the game

C.they practiced before the game

D.the team was better than the writer’s小题4:From the text, we can guess the writer’s team is _________.

A.a basketball from a country school

B.a football team from a school in the city

C.a basketball team from a school in the city

D.a football team from the country小题5: The writer’s team learned a lot from the game. They got to know how to ______.

A.do better from then on

B.fight against the country boys

C.play against a weak team

D.judge a man or a team by clothes

多项选择题