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【多选题】
环境生态学的学科任务有哪些?A.
人为干扰方式及强度的识别
B.
退化生态系统的特征判定
C.
探索人为干扰下的生态演替规律
D.
受损生态系统修复和重建技术研究
E.
生态系统服务功能的评价
F.
生态系统的管理、生态规划和预测
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反馈参考答案：
举一反三
【单选题】肝素抗凝血作用的主要机制是
A.
阻碍凝血因子Ⅱ、Ⅶ、IX、X的合成
B.
抑制血小板聚集
C.
增强ATⅢ对凝血因子的灭活作用
D.
降低血中钙离子浓度
E.
促进纤维蛋白溶解
【单选题】___ difficulty you may have, we will always fight along with you.
A.
What
B.
How
C.
Whatever
D.
However
【单选题】However important we may consider school life to be, there is no denying the fact that children spend more time at home than in the classroom. Therefore, the great influence of parents cannot be ignor...
A.
home training is mom important than school training because a child spends so many hours with his parents
B.
teachers can and should help parents to understand and further the objective of the school
C.
them are many ways in which the mathematics program can be implemented at home
D.
parents have a responsibility to help students in doing homework
【简答题】However wealthy we may be, we can never find enough hours in the day to do everything we want. Economics deals with this problem through the concept of opportunity cost, which simply refers to whether...
【单选题】However important we may regard school life to be, there is no gainsaying the fact that children spend more time at home than in the classroom. Therefore, the great influence of parents cannot be igno...
A.
home training is more important than school training because a child spends so many hours with his parents
B.
teachers can and should help parents to understand and further the objectives of the school
C.
parents unwittingly have hindered and thwarted curricular objectives
D.
there are many ways in which the mathematics program can be implemented at home
【单选题】However important we may regard school life to be, there is no denying spend more time at home than in the classroom. Therefore, the great cannot be ignored or______ by the teacher.
A.
exaggerated
B.
discounted
C.
overestimated
D.
verified
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