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3.下列有关丙烷的叙述中不正确的是(   )

A.光照下能够发生取代反应

B.是石油分馏的一种产品

C.比丁烷更易液化

D.分子中碳原子一定在同一平面上

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2.下列物质中,在一定条件下能水解的高分子化合物是(   )

A.肥皂       B.油脂         C.纤维素       D.氨基酸

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1.下列叙述不正确的是(   )

A.用酒精清洗沾到皮肤上的苯酚   

B.用氨水清洗试管壁附着的银镜 C.用盐析的方法分离油脂皂化反应的产物 D.用冷凝的方法从氨气、氮气和氢气混合气中分离出氨

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(三)以朗读促理解,在理解中求背诵。

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(二)重视语言的积淀。

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49. thought   50. regretted   51. threatened   52. jewellery   53. door

书面表达

Dear Sir or Madam,

   I’m very glad to read your advertisement for the Olympic volunteers for 2008. Having read your terms, I think I’m qualified for the job. I’m Li Hua, a healthy high school boy. By the year 2008, I will be over 18. Good at spoken English, I can communicate with foreigners freely, I’m always ready to help others and full of spirit of devotion. To do the work well as a volunteer, I’m willing to receive any necessary training, and will do whatever the OSCQ requires to. I’m sure, by then, I will be able to offer a 15-day service continuously. Believe me, I’ll make full preparations and will be an excellent volunteer.

Looking forward to your permission.

Yours,

                      Li Hua

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44. robbed   45. report     46. filled     47. when     48. expecting

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43. A。全文讲Monarch butterflies的迁移。

[对话填空]

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42. A。从文章最后一节可知答案。

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41. A。第二节第一句“Every year in the late summer monarchs begin their journey to the south”告诉我们。

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