答案部分
一、单项选择题
1
[答案]:D
[解析]:参见教材P272
2
[答案]:B
[解析]:参见教材P273
3
[答案]:C
[解析]:参见教材P274
4
[答案]:B
[解析]:参见教材P274
5
[答案]:A
[解析]:参见教材P275
6
[答案]:B
[解析]:参见教材P275
7
[答案]:B
[解析]:参见教材P275
8
[答案]:B
[解析]:参见教材P275
9
[答案]:A
[解析]:参见教材P276
10
[答案]:C
[解析]:参见教材P276
11
[答案]:B
[解析]:参见教材P277
12
[答案]:D
[解析]:参见教材P277
13
[答案]:C
[解析]:参见教材P277
14
[答案]:A
[解析]:参见教材P277
15
[答案]:B
[解析]:参见教材P278
16
[答案]:C
[解析]:参见教材P280
17
[答案]:C
[解析]:参见教材P280
18
[答案]:B
[解析]:参见教材P280
19
[答案]:B
[解析]:参见教材P282
20
[答案]:D
[解析]:参见教材P282