______is known to us all, only the theory ______ on practice can be practical.A.
题型:不详难度:来源:
______is known to us all, only the theory ______ on practice can be practical.A.Which; base | B.Which; based | C.As; based | D.As; basing |
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答案
C |
解析
试题分析:考察定语从句和固定搭配。本题第一空是非限制性定语从句,which引导的非限制性定语从句不能放在句首,as指代后面一句话的内容,在句中作主语。第二空是固定搭配be based on…以…为基础。使用了based on practice来修饰名词theory。句意:众所周知,只有以事实为基础的理论才是适用的。故C正确。 点评:非限定性定语从句起补充说明作用,缺少也不会影响全句的理解,在非限定性定语从句的前面往往有逗号隔开,如若将非限定性定语从句放在句子中间,起前后都需要用逗号隔开。需要注意 which引导的非限定性定语从句是用来说明前面整个句子的情况或主句的某一部分。 在非限定性定语从句中,关系词不能用that。 |
举一反三
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There are cases _____ the word “school”is used as a verb(动词).A.that | B.when | C.where | D.which |
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