5、溶液的酸碱性与酸碱度的测定；

4、八个常见的沉淀物：氯化银、硫酸钡碳酸银、碳酸钡、碳酸钙氢氧化镁、氢氧化铜、氢氧化铁；

3、常见酸碱盐的溶解性；

2、金属活动顺序表及其意义和应用；

1、有关酸碱盐的化学用语：电离方程式和常见物质的俗称和主要成分；

42. It was _________ unusual work of art that everyone wanted very much to have a look at it.

A.　 /　　 B. an　　 C. such　　 D. such an

Keys:

1-5 AADCC　 　6-10 CBBDD　　 11-15 AABDB　　 16-20 ABCBC　　 21-25 DABDC

26-30 CBBCC　 31-35 BCDCA　　 36-40 BDBDD　　 41-42 AD

41. I don't regret _________ her the news even if it might have hurt her.

A.　 telling　　 B. to tell　　 C. to have told　　 D. and tell

40. He dropped the _________ and broke it.

A.　 cup of coffee　　 B. coffee's cup　　 C. cup for coffee　　 D. coffee cup

39. He was _________ to move the box, let alone carry it upstairs.

A.　 strong　　 B. too strong　　 C. strong enough　　 D. not strong enough

38. You're ________ your time trying to persuade him; he'll never join us.

A.　 spending　　 B. wasting　　 C. losing　　 D. missing