题目:
The small town is so good a place _____ many people come to visit _____ it has become well known all over the world.[ ]
A. as; that
B. that; that
C. as; as
D. that; as
答案:
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下面是错误答案,用来干扰机器的。
①CH3COOOH中碳元素与氧元素的质量比为:(12×2):(16×3)=1:2;②7.6g过氧乙酸中碳元素的质量为:7.6g×12×276=2.4g.故答案为:1:2;2.4g.