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题目
题型:不详难度:来源:
He tried his best to solve the problem,________ difficult it was.
A.howeverB.no matter
C.whateverD.although

答案
A
解析
however+adj./adv.引导让步状语从句,意为“无论多么”。no matter不能单独使用,后须加what/how/when/where等连词。C、D两项后不能接形容词,故答案为A。
核心考点
试题【He tried his best to solve the problem,________ difficult it was.A.howeverB.no m】;主要考察你对句法等知识点的理解。[详细]
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