甘肃省天水市第一中学2018_2019学年高二生物上学期第三学段考试试题理(扫描版).doc

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1、甘肃省天水市第一中学 2018-2019 学年高二生物上学期第三学段考试试题 理(扫描版)生物试题答案一、选择题(1-30 每题 1 分,31-40 每题 2 分,共 50 分)1. C 2. C 3. C 4. D 5. A 6. C 7. B8. B 9. A 10. B 11. C 12. A 13. A 14. A15. D 16. A 17. D 18. B 19. D 20. D 21. A22. C 23. D 24. A 25. B 26. C 27. B 28. D29. A 30. A 31. B 32. A 33. C 34. C 35. C36.B 37. B 38.

2、C 39. A 40. C二、非选择题(共 50 分)41 (每空 2 分,共 12 分)(1)促进生根;抑制生根(2)不能;4(3)抑制;XY,XZ,Y 与 Z 之间大小关系不确定 42. (每空 1 分,共 8 分)(1)A、B、C 神经体液(2)体温调节和血糖平衡(3)抑制(4)胰高血糖素 血糖浓度降低(5)、 自身免疫 43 (每空 2 分,共 16 分)(1)5 21300 (2)增长型 6.25N (3)随机取样 物种丰富度 (4)负反馈 速度和方向43 (每空 2 分,共 14 分)(1)组成生物体的化学元素(C、H、O、N、P、S 等元素)(2)负反馈调节 (3)垂直 (4)240 (5)绿藻 绿藻在碱性水体中藻毒素含量低植食性比例高

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