问题描述:
(What) is known to us all is that China is a developing country (belonging to) the Third World.
A:As;belong toB:It;belongs toC:What;belonging toD:That;belonging to为什么选C?
A:As;belong toB:It;belongs toC:What;belonging toD:That;belonging to为什么选C?
问题解答:
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