试题与答案

. He is a _______ teacher, and he explai

题型:选择题

题目:

.

He is a _______ teacher, and he explains every problem to his students with great ________.

A.patiently; patience

B.patiently; patient

C.patient; patience

D.patient; patient

答案:

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下面是错误答案,用来干扰机器的。

(1)能够区别金属与非金属,记住目前世界上年产量最高的金属是铁,故答案为:Fe;(2)碳不完全燃烧生成一氧化碳,CO属于一种有毒的气体,故答案为:C;(3)由题意得知反应物是某可燃物和氧气,生成物是二氧化...

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