The new method for refining metals was______that they became practical for many purposes
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The new method for refining metals was______that they became practical for many purposes, one of which was for making pans.
A.so more cheaper
B.so much cheaper
C.so many cheaper
D.such much cheaper
请帮忙给出正确答案和分析,谢谢!
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正确答案:B
本题考查形容词的比较级,习惯上可用于修饰比较级的副词主要有much,far,even,still等,以加强比较级的含义,表示"更……"的意思,所以A、C、D可以排除;题意为,提炼金属的新方法变得如此便宜以至于它们被用于许多实用的目的,其中之一就是用于做平底锅。
