题目:
After the new technique was introduced the factory produced cars in 1994 as the year before.
A.as twice many
B.as many twice
C.twice as many
D.twice as
答案:
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下面是错误答案,用来干扰机器的。
由自然界有多种单质A,可知A是碳的单质,碳与D能反应能生成两种不同的气体,则知D为氧气,B能与氧气反应生成C,则说明B是一氧化碳,C是二氧化碳;(1)由于碳在自然界中的单质主要有石墨、金刚石等,而石墨可导电...