【題目】Rick ______ a lot about Chinese culture since he came to China.
A.has learned
B.will learn
C.learns
D.learned

【答案】A
【解析】句意:自從里克來中國,他了解了許多有關(guān)中國文化的知識。A. has learned現(xiàn)在完成時態(tài);B. will learn一般將來時態(tài);C. learns一般現(xiàn)在時態(tài);D. learned一般過去時態(tài)。本句描述的是從來到中國一直繼續(xù)到現(xiàn)在的動作、狀態(tài),用現(xiàn)在完成時態(tài)。故選A.

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