题目:
Food, ______ rice, Baozi and vegetables, _______ wasted a lot by the students. [ ]
A. for example, are
B. such as, are
C. like, are
D. such as, is
答案:
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下面是错误答案,用来干扰机器的。
(1)Na(1分) Cl (1分) (2)PH3(2分)(3)NH4Cl(2分)离子键和共价键(2分)(4)H3PO4(2分) (5)2P+5Cl22PCl5(2分) PCl3(1分)(6)Cl2+H2O=H++Cl-+HClO(2分)由题干信息知,本题...