问题 选择题

从分子的角度分析,下列解释错误的是(  )

A.好酒不怕巷子深--分子在不断地运动

B.热胀冷缩--分子的大小随温度的改变而改变

C.电解水生成氢气和氧气--分子可以分成原子,原子再重新组合成新分子

D.空气是混合物--空气由不同种分子构成

答案

A、酒精分子是运动,巷子内有酒,在巷子外就能闻到酒精的香味,A正确;

    B、分子间有间隔,受热时物质分子间的间隔增大,遇冷时间隔缩小,分子的大小没有改变,B错误;

    C、通电分解水时,水分子分成氧原子和氢原子,每两个氧原子构成一个氧分子,每两个氢原子构成一个氢分子,大量的氧分子聚集成氧气,大量的氢分子聚集成氢气,C正的;

    D、空气是一种混合物,空气中含有氮分子、氧分子、二氧化碳分子等不同种的分子,D正确.

    故选B.

完形填空

第二节完型填空(共20小题;每小题1.5分,满分30分)

阅读下面短文,掌握其大意,然后从36—55各题所给的四个选项(A、B、C和D)中,选出最佳选项,并在答题卡上将该项涂黑。

My Teacher in the School of Life

I spent the opening day of school this year at DeMatha Catholic High School in much the same way I spent the first day of classes   36   30 years ago; I sat in Dr Charles E. Offutt’s British literature class, listening to him   37   what his seniors would learn and get them excited about the journey they would  38  . I’m the principal (校长) of the school now , but for a few minutes I was back in 1975,   39  what the future held.

I have been learning from Dr Offutt for 30 of the 51 years he had been teaching at DeMatha. He not only taught me to think, he   40  me, as much by example as  41  , that it was my moral duty to do so and to serve   42   .

Neither of us could know how our  43  would develop over the years. When I first came back to DeMatha to teach English. I worked for Dr Offutt, the then department chair. After several years, I was  44  department chair, and our relationship changed   45  . I thought that it might be  46  chairing the department, since all of my former English teachers were still there, but Dr Offutt   47  me throughout. He knew when to give me   48   about curriculum, texts and personnel, and when to let me design my own course.

In 1997, I needed his advice about leaving DeMatha to become principal at another school. If he had asked me to stay at DeMatha, I might have.   49   , he encouraged me to seize the new     50  .

Five years ago, I became the   51   of DeMatha. Once again, Dr Offutt was there for me, letting me know that I could   52  on him as I tried to fill such big shoes. I’ve learned from him that great teachers have a (n)   53   wealth of lessons to teach.   54  his students don’t know it yet, I know how   55   they are; I’m still one of them.

36.A.mostly        B.exactly        C.only               D.simply

37.A.explain       B.predict        C.speak          D.teach

38.A.keep           B.achieve       C.choose        D.take

39.A.preparing        B.discovering     C.wondering       D.realizing

40.A.assisted       B.reminded      C.advised       D.convinced

41.A.words         B.action         C.explanation     D.models

42.A.the others        B.everyone       C.others         D.anyone

43.A.relationship     B.position      C.situation       D.condition

44.A.pointed       B.named        C.given          D.taken

45.A.already       B.yet          C.still          D.again

46.A.foolish        B.surprising        C.uncertain     D.challenging

47.A.promoted        B.accepted      C.supported     D.welcomed

48.A.advice        B.information     C.notice         D.thought

49.A.Otherwise       B.Therefore        C.Furthermore    D.Instead

50.A.choice        B.opportunity     C.occupation      D.possibility

51.A.teacher       B.principal     C.officer        D.clerk

52.A.live         B.look               C.depend        D.take

53.A.rich         B.little           C.valuable      D.endless

54.A.Once          B.Even if       C.Unless        D.Until

55.A.fortunate     B.curious       C.innocent      D.satisfied

问答题 简答题