The first decade in the 21st century _______ the rapid rise of China as a world economic power.
A．witnessB．has witnessedC．will witness D．have witnessed
B
本題考查時(shí)態(tài)。根據(jù)句意：21世紀(jì)的前十年已經(jīng)見(jiàn)證了作為世界經(jīng)濟(jì)強(qiáng)國(guó)中國(guó)迅速的發(fā)展。此處用現(xiàn)在完成時(shí)。主語(yǔ)是單數(shù)，故用has。
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