单选题：28.

题目分类：英语四级
题目类型：单选题
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28. A．He saved the life of his brother choking on foo
B．He rescued a student from a big fir
C．He is very good at public speakin
D．He gives informative talks to young childre

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12.

12. A．Her new responsibilities in the compan B．What her job prospects ar C．What

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3. What does a study in Sweden show?[A] The natural environm

3. What does a study in Sweden show?[A] The natural environment can help childre

分类：英语四级题型：单选题

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It is well known that water is not__________endless resource

It is well known that water is not__________endless resource，nor that can be mad

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甲购买乙的一辆二手车，但双方没有办理过户手续。甲付款购车后，驾驶该车到某汽车空调配件经销部丙处。购买汽车空调配件并安装。

甲购买乙的一辆二手车，但双方没有办理过户手续。甲付款购车后，驾驶该车到某汽车空调配件经销部丙处。购买汽车空调配件并安装。安装好并付清款项后。甲驾车离开。途中，因

分类：英语四级题型：单选题

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民事行为的有效条件包括（　　）。

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