1．【答案】C

2．【答案】B

3．【答案】C

4．【答案】B

5．【答案】A

6．【答案】B

7．【答案】B

8．【答案】B

9．【答案】B

10．【答案】C

11．【答案】D

12．【答案】C

13．【答案】C

14．【答案】A

15．【答案】A

16．【答案】D

17．【答案】C

18．【答案】B

19．【答案】B