参考答案
1.C2.C3.B4.C5.D
6.C7.B8.B9.C10.C
11.D12.C13.A14.D15.B
16.B17.C18.A19.A20.D
21B22C23C24B25A
26D27D28C29A30B
31D32B33C34C35A
36B37A38D39D40A
41D42C43A44D45A
46B47D48B49D50C
51A52A53C54B55B
56A57C58D59A60A
61C62B63A64A65C
66C67D68D69B70B
71B72A73B74C75C
76D77B78A79A80B
81B82B83D84A85D
86B87A88D89A90B