二、判断题

1.× 2.√ 3.√ 4.√ 5.× 6.×

7.√ 8.√ 9.√ 10.√ 11.√ 12.√

13.√ 14.√ 15.√ 16.√ 17.× 18.×

19.× 20.× 21.× 22.√ 23.√ 24.√

25.× 26.√ 27.× 28.× 29.√ 30.√

31.√ 32.× 33.× 34.× 35.× 36.×

37.√ 38.√ 39.× 40.× 41.√ 42.√

43.√ 44.√ 45.√