The first decade in the 21st century _______ the rapid rise of China as a world economic power.
A.
witness
B.
has witnessed
C.
will witness
D.
have witnessed
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【简答题】S1:What's the matter with you ?S2:I've got a headache and a sore throat. Sometimes I feel cold.Q:Which is not mentioned in the conversation?A. A headache B. A cough C. A sore throat D. A cold