0  303635  303643  303649  303653  303659  303661  303665  303671  303673  303679  303685  303689  303691  303695  303701  303703  303709  303713  303715  303719  303721  303725  303727  303729  303730  303731  303733  303734  303735  303737  303739  303743  303745  303749  303751  303755  303761  303763  303769  303773  303775  303779  303785  303791  303793  303799  303803  303805  303811  303815  303821  303829  447090 

3.镁条在二氧化碳中剧烈燃烧瓶壁有黑点和白色粉末,不能说明(  )

    A.二氧化碳显示氧化性  B.二氧化碳是酸酐

    C.二氧化碳中含有碳元素 D.助燃与不助燃是相对的

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2.将碳原子数相同的气态烷烃和气态烯烃组成的混合气体 1.0 体积在足量的氧气中充分燃烧生成2.0体积的CO2和2.4体积的水蒸汽(均在相同条件下测定)。则混合烃中烷烃和烯烃的体积比是 (  )

 A.3:1   B.1:3    C.2:3    D.3:2

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1.铝在人体中积累可使人慢性中毒,1989年世界卫生组织正式将铝“确定为食品污染之一”而加以控制。铝在下列场合须加以控制的是(  )

①制铝锭  ②制易拉罐  ③制电线电缆  ④制牙膏皮  ⑤用明矾净水  ⑥制炊具  ⑦用明矾和小苏打做出食物膨化剂  ⑧用Al(OH)3制成胃药  ⑨制防锈油漆(  )

A.①②④⑤⑥⑦ B.②⑤⑥⑦⑧⑨ C.②④⑤⑥⑦⑧  D.③④⑤⑥⑦⑧

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第三节:写作(满分30分)

  高中学习任务非常繁重,因此同学们对于参加学校活动有着不同的看法,请以“Taking Part in School Activities”为题,根据下列提示,并结合自己的所见所闻,用英语写一篇120~150词的短文。

1、 部分同学积极参加学校活动,因为……

2、 另一部分同学则不愿参加,因为……

3、 我认为……

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第一节:单词拼写(共10小题;每小题1分,满分10分)

76.He sat on the chair, listening to his mother________________(不耐烦地).

77.The whole teaching building_______________(坍塌) during the big earthquake this year.

78.The dog has______________(咬) a hole in my trousers.

79.No one_____________(反对) the plan when it was made.

80.Do you think that success lies in ______________(勤奋)?

81.It is said that many _____________(学者) will attend the conference.

82.I think there will be a good opportunity____________(等候)you.

83.The economy has_____________(繁荣) since he took charge of the city.

84.He apologised to us for his______________(过失).

85.The girl is unlikely to_____________(恢复) from the bad illness.

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