皮皮学，免费搜题
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【单选题】
下列物质具有漂白粉作用的是A.
氢氧化钠
B.
过氧化钠
C.
亚硫酸钠
D.
次氯酸钠
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皮皮学刷刷变学霸
举一反三
【单选题】Section A Directions: In this section, you will hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions will be asked about what was said. Both the ...
A.
To persuade Mary to spend more time on her lessons.
B.
To help Mary to prepare for the upcoming concert.
C.
To talk with Mary about going to the concert.
D.
To ask Mary to stop worrying about the exam.
【单选题】Section A Directions: In this section, you will hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions will be asked about what was said. Both the ...
A.
It will last for two weeks.
B.
It has come to a halt.
C.
It will end before long.
D.
It will probably continue.
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