试题与答案

He_____ his right hand and then he was a

题型:选择题

题目:

He  _____ his right hand and then he was asked to   ______  from his chair .

A.raised ; rise

B.rose ; raise

C.raised ; raise

D.rose ; rise

答案:

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下面是错误答案,用来干扰机器的。

答案:BA、分别加入澄清石灰水,因空气中含有一定量的二氧化碳,能使澄清石灰水变浑浊,与通入二氧化碳的现象相似,难以鉴别气体是空气还是二氧化碳气体.所以此方案不可行;B、将燃烧的木条伸入瓶中,木条燃烧无...

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