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【单选题】
种群生态学家们通常都认可动物种群没有办法在面积过小的栖息地斑块中长期存活，为了验证这个观点，Biedermann研究和总结了从欧洲中部草原到亚洲热带森林15种不同景观中，50种不同体形（1.9-559mm）的动物，包括19种昆虫，27种鸟，1种爬行动物和3种哺乳动物，在不同面积（1-25000000m 2 ）的栖息地斑块中的发生率，得到了下面的图，每根曲线a，b，c，d，e，f都代表一个物种，横轴为栖息地斑块面积，纵轴为发生率，即在栖息地中被观测到的可能性。 根据，在面积为80m 2 的栖息地斑块中，发生率在0.95以上的物种是：（）
A.
物种f
B.
物种d
C.
物种c
D.
物种a
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参考答案：
举一反三
【单选题】dispose [dis’pəuz]
A.
n.一出戏剧,剧本
B.
vi.&n.减少,减少
C.
vt.建造;建设;构筑
D.
vi.去掉,丢掉;销毁
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【简答题】●In the following essay，each blank has four choices．Choose the most suitable one from the four choices and write down in the answer sheet． A (66) is basically an end point of a communication link betw...
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【单选题】----What were you saying just now? ----_______. Let’s get down to the monthly contest now.
A.
Don’t mention it
B.
Forget it
C.
That’s all right
D.
Take it easy
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【单选题】--- Let’s have a rest. --- Not now. I don’t want to stop _________ now.
A.
studying
B.
to study
C.
for studying
D.
studied
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【多选题】How to connect end systems to edge router?
A.
device access networks
B.
residential access networks
C.
institutional access networks
D.
mobile access networks
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【简答题】Passage Two:Questions 26 to 30 are based on the following passage.As supplier of most of the food we eat and of raw materials for many industrial processes, agriculture is clearly an important area of...
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【简答题】采用B/S软件体系结构的应用软件系统的优点是 、 。
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【简答题】As our supplier was unable to meet the deadline for delivery,___________
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【简答题】S1:Now let's check the number of liferafts,date of last services and the condition of the arrangement.S2:OK,Sir.Q:Which of the following items was not mentioned?A. The number of lifeboats. B. The date...
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【简答题】S1:Now what's the next step?S2:Let's check the condition of the coaming as well as the watertightness including packing,cleats and tarpaulins.Q:What are they most probably checking?A. Air pipes. B. Co...
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相关题目：
【单选题】dispose [dis’pəuz]
A.
n.一出戏剧,剧本
B.
vi.&n.减少,减少
C.
vt.建造;建设;构筑
D.
vi.去掉,丢掉;销毁
查看完整题目与答案
【简答题】●In the following essay，each blank has four choices．Choose the most suitable one from the four choices and write down in the answer sheet． A (66) is basically an end point of a communication link betw...
查看完整题目与答案
【单选题】----What were you saying just now? ----_______. Let’s get down to the monthly contest now.
A.
Don’t mention it
B.
Forget it
C.
That’s all right
D.
Take it easy
查看完整题目与答案
【单选题】--- Let’s have a rest. --- Not now. I don’t want to stop _________ now.
A.
studying
B.
to study
C.
for studying
D.
studied
查看完整题目与答案
【多选题】How to connect end systems to edge router?
A.
device access networks
B.
residential access networks
C.
institutional access networks
D.
mobile access networks
查看完整题目与答案
【简答题】Passage Two:Questions 26 to 30 are based on the following passage.As supplier of most of the food we eat and of raw materials for many industrial processes, agriculture is clearly an important area of...
查看完整题目与答案
【简答题】采用B/S软件体系结构的应用软件系统的优点是 、 。
查看完整题目与答案
【简答题】As our supplier was unable to meet the deadline for delivery,___________
查看完整题目与答案
【简答题】S1:Now let's check the number of liferafts,date of last services and the condition of the arrangement.S2:OK,Sir.Q:Which of the following items was not mentioned?A. The number of lifeboats. B. The date...
查看完整题目与答案
【简答题】S1:Now what's the next step?S2:Let's check the condition of the coaming as well as the watertightness including packing,cleats and tarpaulins.Q:What are they most probably checking?A. Air pipes. B. Co...
查看完整题目与答案
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