单选题：Questions are based on the conversation you have just hear

题目分类：英语四级
题目类型：单选题
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题目内容：

Questions are based on the conversation you have just heard．
A．Keeping out the cold．
B．Keeping out the heat.
C．Avoiding air pollution．
D．Preventing the dust．

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答案解析：

Despite its overall downward trend worldwide，the online sale

Despite its overall downward trend worldwide，the online sales of luxury goods gr

分类：英语四级题型：单选题

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根据压力容器安装许可规则，下列说法正确的是（　　）

根据压力容器安装许可规则，下列说法正确的是（　　）A．分片到货的球罐安装，属于压力容器安装许可管理范围 A．分片到货的球罐安装，属于压力容器安装许可管理范围 B

分类：英语四级题型：单选题

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在截流方法中，混合堵的截流方法是采用（　　）相结合的抛投合龙方法。

在截流方法中，混合堵的截流方法是采用（　　）相结合的抛投合龙方法。 A．立堵与平堵 B．上堵与下堵 C．爆破堵与下闸堵 D．抛投块料堵与爆破堵

分类：英语四级题型：单选题

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Being high in fat and sugar, the food sold as fund-raisers

Being high in fat and sugar, the food sold as fund-raisers is lacking in nutrit

分类：英语四级题型：单选题

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Recent studies show that government-approved school lunch c

Recent studies show that government-approved school lunch compares favorably wi

分类：英语四级题型：单选题

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