—China develops so fast.

—That’s true. It ______ a lot already.

　 A. changes　　 B. changed　　 C. will change　　 D. has changed

答案：D

解析:動詞的時態(tài)。句意：—中國發(fā)展如此迅速�！茄健Ｋ呀�(jīng)發(fā)生了很大的變化。表示發(fā)生在過去對現(xiàn)在仍有影響的動作。所以，判定為現(xiàn)在完成時。故選D。

    

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