问题 选择题

依据元素周期表及元素周期律,下列推断正确的是(  )

A.H3BO3的酸性比H2CO3的强

B.Mg(OH)2的碱性比Be(OH)2的强

C.HCl、HBr、HI的热稳定性依次增强

D.若M+和R2-的核外电子层结构相同,则原子序数:R>M

答案

答案:B

阅读理解

阅读理解。根据上文内容判断正(T)误(F)。

     Mrs Jones' telephone number is 2562781 and the number of the city cinema (电影院) is 2562718.

 because the two numbers look the same (一样), some people often make a mistake (弄错)and telephone

  her when they want the cinema.

     One evening, the Jones are having supper at the table. Just then, the telephone bell rings. Mrs Jones

 goes to answer the telephone. A tired (累的) man says, "Excuse me, at what time does your last movie

  begin?"

     "I'm sorry." says Mrs Jones, "But you have the wrong (错误的) number. This is not the cinema."

     "Oh, sorry, it began twenty minutes ago(以前)? Thank you all the same. Goodbye." Says the man.

     Mrs Jones is very surprised (惊讶), so she tells her husband (丈夫) the whole thing. Her husband, Mr

  Jones laughs (笑) and says: "I see. The man's wife wants to go to a movie, but he is tired. He doesn't

 want to go to a movie. So he telephones the cinema. His wife hears (听见) him, but she can't hear you.

 Now they stay at home this evening, and the husband is very happy and he can have a good rest (休息) at

  home."

(      ) 1. Mrs Jones' telephone number is the same as the number of the city cinema.

(      ) 2. People often telephone Mrs Jones when they want the cinema.

(      ) 3. One evening when the telephone bell rings, they are having supper.

(      ) 4. The tired man wants to know when the last film begins.

(      ) 5. The husband is happy to stay at home.

单项选择题