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The fact has worried teachers and parents ________ more and more students have got near-sighted.
A.whatB.which
C.thatD.though
答案:C
试题分析:考察同位语。A.什么,通常在从句中作疑问词或充当两种成分;B.通常作物的定语的引导词;C.可引导宾语从句,主语从句,同位语从句,在句中不充当成分;D.即使,表让步的连词。句意:越来越多的学生得了近视这个事实已经使老师和父母担忧了。that后的从句作fact的同位语不充当成分,故选C
考点:考察同位语