试题与答案

下列离子方程式表达不正确的是() A.用SO2水溶液吸收Br2:SO2 + Br

题型:选择题

题目:

下列离子方程式表达不正确的是(   )

A.用SO2水溶液吸收Br2:SO2 + Br2+2H2O =4H+ + SO+2Br

B.用稀硫酸除去铜绿:4H+Cu2(OH)2CO3===2Cu2+CO2↑+3H2O

C.酸性高锰酸钾和过氧化氢制取少量氧气:4MnO+4H2O2+12H+=4Mn2++7O2↑+10H2O

D.用惰性电极电解硫酸铜溶液:2Cu2++ 2H2O 2Cu +O2↑ +4H+

答案:

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题型:阅读理解

One day, many years ago, when I was working as a psychologist in England, I brought David into my office. His face was pale and he looked at his own feet.

David lost his father when he was two years old and lived with his mother and grandfather ever since. But when he was 13, his grandfather died and his mother was killed in a car accident. His teacher told me that he refused to talk to others from then on.

David didn’t say a word. As he was leaving, I put my hand on his shoulder. “Come back next week if you like.” I said.

He came and I suggested we play a game of chess. He agreed. After that we played chess every Wednesday afternoon — in complete silence. Usually, he arrived earlier than we agreed. It seemed that he liked to be with me.

Maybe I gave David something. But I learned more from him. I learned that time makes it possible to get over what seems to be painful. David showed me how to help people like him.

根据短文内容,选择正确答案。

小题1:When David came into the writer’s office, he___________.

A. said hello to the writer   B. seemed happy    C. looked at his feet

小题2:David’s father died when he was ____________.  

A. 13        B. 2         C. 5

小题3:To help David, the writer ________ every Wednesday afternoon.

A. played chess with him     B. told stories to him    C. played soccer with him

小题4:What club did David join?

A. A chess club    B. An art club     C. A bicycle club

小题5:Which of the following statements is NOT true?

A. Since his father died, David refused to talk to others.

B. David didn’t say anything to the writer at first.

C. David finally got friends in school.

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