问题 选择题
如图所示为一磁流体发电机示意图,A、B是平行正对的金属板,等离子体(电离的气体,由自由电子和阳离子构成,整体呈电中性)从左侧进入,在t时间内有n个自由电子落在B板上,则关于R中的电流大小及方向判断正确的是(  )

A.I= ,从上向下

B.I= ,从上向下

C.I= ,从下向上

D.I= ,从下向上

答案

答案:A

完形填空

第II卷(共45分)

第四部分:写作(共两节,满分45分)

第一节:阅读表达(共5小题;每小3分,满分15分)

阅读下面的短文,请根据短文后的要求将答案答题(请注意问题后的要求)。

She is a cute,quiet girl.As a daughter,she has no secrets from her mother, who is very pleased with her.But recently she has become somewhat mysterious(神秘的).What if she falls in 1ove,which is too early for a girl of her age?After all,she is reaching the “dangerous Stage”.These thoughts have caused trouble in the mother’s mind.

One weekend the girl came to tell her mother that she was going to the cinema with her schoolmates and would return late、This was the first time her mother had agreed,and she couldn’t help worrying because her daughter had never been away at night before.The mother waited till nine and her uneasiness(不安)got the upper hand over her. She decided to go out to meet her daughter.Just al that moment the noise of a car pul1ing up drew her to the window and there was her daughter,waving goodbye to a boy. Her heart missed a beat. When   ,the mother was watching TV,pretending that nothing had happened.“Mum,I’m back.”. “Yeah.”. “Sorry to be late. Still sitting up?” Yes,Oh,that….Who’s that boy?” The daughter was stunned(发愣)for a moment.“Ah.It’s my monitor.He gave me a lift on his way home.Mum, I’m going to bed.” “All right, Go to sleep early.”

Next morning,when the mother went to the daughter’s room to do some tidying,she found her diary left at her pillow. After a few minutes’ hesitation(犹豫),she finally opened it to the entry of the night before. it said: Mum, it was my love that made you ask, but it would show your understanding of me if you hadn't. Holding the diary,the mother felt in thought.

76.Please fill in the blank with proper words.(P1ease answer within 10 words.)

77.Which sentence in the second paragraph can be replaced by the following one? …she became nervous and worried.

78.Why was the daughter stunned for a moment after hearing her mother’s question,(P1ease answer within 15 words)

79.How might the mother feel after reading her daughter’s diary?(P1ease answer within 15 words)

80.P1ease translate the underlined sentence into Chinese.

名词解释