The factory produces half a million pairs of shoes every day, 85% ____ sold abroad.
A．of them areB．of them isC．of which isD．of which are
D

試題分析：句意：這個工廠每天生產(chǎn)50萬雙鞋，85%的鞋被銷往國外。這個句子包含一個非限制性定語從句，且“85%的鞋”和“銷往”之間是被動關(guān)系，故用被動語態(tài)，選D。
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