作业1答案

1.D2.A3.C4.B5.B

6.D7.B8.D9.A10.B

11.C12.D13.B14.A15.B

16.C17.B18.A19.D20.B

21.C22.D23.D24.A25.B

26.B27.A28.C29.C30.A

31.A32.C33.D34.C35.D

36.T37.T38.NG39.F40.F

作业2答案

1.C2.A3.D4.D5.D

6.D7.B8.B9.C10.C

11.A12.B13.B14.A15.B

16.C17.A18.D19.D20.B

21.B22.A23.C24.A25.C

26.B27.C28.D29.D30.C

31.A32.D33.C34.D35.B

36.F37.F38.T39.T40.NG

作业3答案

1.A2.C3.A4.B5.A

6.D7.A8.B9.B10.B

11.A12.B13.C14.B15.B

16.B17.D18.C19.C20.C

21.D22.A23.D24.C25.B

26.A27.C28.B29.B30.C

31.D32.D33.B34.D35.C

36.F37.T38.T39.NG40.T