单选题：The passage suggests that married couples become

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题目类型：单选题
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题目内容：

The passage suggests that married couples become A．unfriendly with guest
B．uninterested in guest
C．hostile when guests have lef
D．quiet when guests have lef

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答案解析：

典型合同又称为无名合同，是指法律尚未特别规定、也未赋予一定名称的合同。（　　）

分类：专四题型：单选题

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She didn't ring the communication cord immediately because

She didn't ring the communication cord immediately becauseA．she was very much af

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钢管混凝土材料应用于以（　）为主的构件中，较之钢结构和混凝土结构有着极大的优越性。

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不等跨不等高的大跨度预应力混凝土连续梁，是（　）悬臂施工法最常用的桥梁结构形式。凝土

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在变形缝中沉降缝的构造特点是（　）。

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