单选题：People often didn't realize how close they were to success w

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题目类型：单选题
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题目内容：

People often didn't realize how close they were to success when________. A．he developed 3,000 theories
B．he couldn't afford to buy a pair of shoes
C．he found himself an unsuccessful man
D．they quitted
E．an innovation should work immediately
F．failure is the mother of success

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答案解析：

The water in this part of the river has been contaminated by

The water in this part of the river has been contaminated by sewage(污水)． A．pollu

分类：综合类题型：单选题

The price Of vegetables fluctuates according to the weather

The price Of vegetables fluctuates according to the weather． A．jumps B．rises C．

分类：综合类题型：单选题

随着宏观经济调控政策的逐步落实，我国经济增速会适度放缓，对石油天然气资源的需求有所减少，供求矛盾在一定程度上将得到缓解。

随着宏观经济调控政策的逐步落实，我国经济增速会适度放缓，对石油天然气资源的需求有所减少，供求矛盾在一定程度上将得到缓解。根据国际能源署的最新预测，今年我国原油产

分类：综合类题型：单选题

寻找地球外的智慧生物一直是人们乐此不疲的工作。如果“外星人”确实存在，他们居住的星球应该和我们的地球具有大致相同的“环境

寻找地球外的智慧生物一直是人们乐此不疲的工作。如果“外星人”确实存在，他们居住的星球应该和我们的地球具有大致相同的“环境。科学家已就这一点基本达成共识，他们正努

分类：综合类题型：单选题

变更或解除合同的通知或协议（　　）。

变更或解除合同的通知或协议（　　）。 A．经当事人协商同意应当采取口头形式 B．应当采取口头形式 C．应当采取书面形式 D．由当事人自由选择采取书面形式或口头形

分类：综合类题型：单选题