1, answer: C.

2. answer: B.

3. answer: B.

4. answer: a.

5. answer: B.

6. answer: B.

7. answer: a.

8. answer: a.

9. answer: B.

10, answer: a.

1 1, answer: d.

12, answer: a

13, answer: a

14, answer: b

15, answer: b

16, answer: D.

17, answer: C.

18, answer: b

19, answer: b

20. answer: B.

2 1, answer: C.

22. answer: a.

23. answer: D.

24. answer: B.

25. answer: a.

26. answer: C.

27. answer: B.

28. answer: B.

29. answer: a.

30. answer: B.

3 1, answer: B.

32. answer: C.

33. answer: B.

34. answer: C.

35. answer: B.

36. answer: a.

37. answer: C.

38. answer: a.

39. answer: C.

40. answer: a.

4 1, answer: C.

42. answer: C.

43. answer: B.

44. answer: B.

45. answer: C.

46. answer: B.

47. answer: B.

48. answer: B.

49. Answer: B (1 in AC1is the lower corner mark, the others are the same).

50. answer: C.

5 1, answer: D.

52. answer: a.

53. answer: a.

54. answer: a.

55. answer: B.

56. answer: B.

57. answer: C.

58. answer: a.

59. answer: B.

60. answer: D.

6 1, answer: B.

62. answer: C.

63. answer: B.

64. answer: C.

65. answer: D.

66. answer: C.

67. answer: B.

68. answer: C.

69. answer: B.

70. answer: a.

7 1, answer: B.

72. answer: C.

73. answer: a.

74. answer: B.

75. answer: a.

76. answer: a.

77. answer: B.

78. answer: B.

79. answer: B.

80. answer: a.

Second, the judgment question

1, answer: √.

2. Answer: √.

3. Answer: ×

4. Answer: √.

5. Answer: √.

6. Answer: ×

7. Answer: √.

8. Answer: √.

9. Answer: ×

10, answer: √.

1 1, answer: √.