问题 填空题

现代战争中有一种石墨炸弹,在空中爆炸后成丝状落在电网上,能破坏敌方的电网.这是因为石墨是______(填“导体”或“绝缘体”),使电路发生了______(填“通路”、“开路”或“短路”)

答案

因为石墨是导体,石墨炸弹在空中爆炸后成丝状落在电网上,把电线连接在一起使电路发生了短路,达到破坏敌方电网的目的.

故答案为:导体、短路.

阅读理解

Mr and Mrs White had two sons and three daughters. One Sunday Mrs White said to her husband, “The children don’t have any lessons today, and you’re free too. There’s a new funfair(游乐场) in the park. Let’s all go there to play.”

Her husband said, “I want to finish some work today.” “Oh, forget it. Go there and make our children happy. That’s the most important work.” Mrs White said.

So Mr and Mrs White took their children to the funfair. Mr White was 45 years old, but he enjoyed the funfair more than his children. He hurried from one thing to another, and ate lots of sweets. One of his children said to his mother, “Dad is just like a small child, isn’t he, mom?” Mrs White didn’t want to follow his husband around any more at that time and answered, “He is even worse than a small child, Mary, because he might spend more money than a small child.”

小题1: There were_____ children in the family.

A.two

B.three

C.four

D.five小题2: One Sunday, Mrs and Mr White wanted to go to_____ with their children.

A.school

B.work

C.a funfair

D.a shop小题3: Mr White liked the place so much that he_____.

A.sold lots of sweets

B.followed his wife all the time

C.hurried from one thing to another

D.asked a lot of questions小题4: From the story we know Mrs White_____ when Mary asked her the question.

A.was still excited to play

B.was a little angry with Mr White

C.looked for Mr White everywhere

D.ate a lot of sweets小题5: Of all the family members, _____enjoyed playing there most that Sunday.

A.Mr White

B.Mrs White

C.Mary

D.the boys

填空题