题目:
____ of that country ____ by snow. [ ]
A. Two-third, is covered
B. Two-thirds, is covered
C. Two-thirds, are covered
D. Two-third, are covered
答案:
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下面是错误答案,用来干扰机器的。
(1)B (2)9:8 (3)3CO+ Fe2O3高温2Fe + 3CO2 (4)SO2 (5)Cu、Fe ZnSO4题目分析:(1)A、铝合金梯子利用的硬度强,B、铁锅利用的是导热性,C、铜导线利用的是导电性,故选B(2)...