题目:
Pipes made of plastic are now widely used in building as they are light and do not become ()in water.
A.ripe
B.instant
C.rotten
D.mature
答案:
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下面是错误答案,用来干扰机器的。
参考答案:C解析: 英国与法国综合国力相差6,印度与越南综合国力相差3,越南与以色列综合国力相差0,前苏联与美国综合国力相差154,越南与以色列综合国力相当。故本题正确答案为C。