19.2658答案:C
20.2776答案:C
21.2778答案:B
22.2779答案:D
23.2795答案:D
24.2796答案:B
25.2941答案:B
26.2942答案:D
27.2943答案:C
28.2960答案:C
29.2961答案:B
30.2962答案:C
31.2963答案:C
32.3013答案:C
33.3022答案:D
34.3023答案:C
35.3204答案:B
36.3206答案:A
37.3205答案:C
38.1912答案:C