问题 单项选择题

RLC元件串联电路发生谐振时,串联电路总电压U与电阻上的分电压UR关系是()。

A.U=2UR

B.U<UR

C.U=UR

D.U>UR

答案

参考答案:C

阅读理解

阅读理解。

Dear Amy,

    I couldn't read your two e-mails until today because my computer was broken. I'm sorry to hear

about your problem, but I'm glad you're feeling better and are recovering (康复). I'm surprised that

in China someone's liver(肝脏) matched yours! This is really a moving story- a stranger donated part

of his liver to a girl he doesn't even know!

    You're right. We shouldn't care too much about our weight. I'm happy you stopped taking those

weight-loss pills. From your photo I can see you are now looking very well in the hospital. To keep

slim is important, especially for an actress, but nothing is more important than health. Your doctor's

advice is indeed very good- exercise for at least half an hour every day and eat lots of fruit and

vegetables.

    It's not only in your country. It's the same here with us Chinese- many people are always going on

diets or taking weight-loss pills, which are often dangerous. But in fact, some of them are not overweight

(超重) at all. I hope these people can learn something from your story. Hope you will leave hospital as

soon as possible.

                                                                                                                                      Love 

                                                                                                                                      XXX

1. Who does "a girl" in the letter refer to? [ ]

A. The writer of the letter.

B. Amy.

C. A stranger.

D. An unknown person.

2. Which country is the writer of the letter from? [ ]

A. America.

B. China.

C. Germany.

D. England.

3. Which of the following is NOT right?[ ]

A. Amy has probably just received an operation on liver.

B. Amy is now probably in hospital recovering.

C. A Chinese man donated part of his liver to Amy.

D. Amy is now still going on diets or taking weight-loss pills.

名词解释