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【单选题】
下列说法不正确的是A.
除去N 2 中的少量O 2 ：通过灼热的Cu粉，收集气体
B.
铅蓄电池在放电时，Pb作为负极，不断转化为PbSO 4
C.
用盐酸酸化KMnO 4 溶液可以增强其氧化性
D.
强电解质在水中溶解度不一定大于弱电解质在水中的溶解度
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反馈参考答案：
举一反三
【单选题】John and Peter like to __________ their life.
A.
talk
B.
talk to
C.
talk with
D.
talk about
【单选题】沟通的定义是人们通过语言和非语言方式传递并理解信息、知识的过程,是人们为了了解他人思想、情感、见解和价值观的一种( )的互动过程。
A.
双向
B.
单向
C.
自上而下
D.
自下而上
【简答题】听力原文：What does the passage talk about? What does the passage talk about? It talks about the changes in ______.
【简答题】A．talk B．to talk C．talk about D．to talk about
【简答题】What does the ad talk about? It talks about ______ .
【单选题】What will the author talk about in the following paragraph?
A.
He will continue to talk about the history of RPO.
B.
He will talk about the principles of raising the efficiency and end result of the RPO solution.
C.
He will talk about the types of RPO.
D.
He will talk about different RPO solutions.
【单选题】What do they talk about?
A.
They talk about a magazine.
B.
They talk about food.
C.
They talk about the beach.
【单选题】The purpose of this passage is______.
A.
to talk about Valentine's Day
B.
to talk about the story of Valentine
C.
to talk about people's celebration on Valentine's Day
D.
to talk about the popularity of celebrating Valentine's Day now in the world
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