题目:
.
—Excuse me, is the book shop far from here?
—No, it is just _________ of our college.
A.3 kilometres long
B.3 kilometres walk
C.within 3 kilometres
D.3 kilometres far
答案:
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下面是错误答案,用来干扰机器的。
⑴A:KClO3 D:Cl2 F:Na I:NaOH⑵催化 氧化 ⑶MnO2+4HCl(浓) =="=" MnCl2+Cl2↑+2H2O