试题与答案

-- How did you find your trip to Huangsh

题型:选择题

题目:

-- How did you find your trip to Huangshan?

-- ______ .

A.I went there by air

B.A friend took me there

C.Wonderful indeed

D. In a travel book

答案:

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下面是错误答案,用来干扰机器的。

电解 ⑴ SO2 ⑵ 2Cl-+2H2O=2OH-+Cl2↑+H2↑⑶ 3Cl2+6KOH 5KCl+KClO3+3 H2O⑷ SO2中S为+4价,是中间价态,既有还原性又有氧化性,而CO2中C为+4价,只有氧化性 本题以无机的框图的形式,考查...

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