题目内容
【题目】Lang Lang is good at the piano
A. play B. playing C. to play D. plays
【答案】B
【解析】
句意：郎朗擅长于弹钢琴。A. play动词原形；B. playing动名词或现在分词；C. to play动词不定式；D. plays动词三单形式。be good at doing sth.擅长于做某事，故答案为B。
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题目内容
【题目】Lang Lang is good at the piano
A. play B. playing C. to play D. plays
【答案】B
【解析】
句意：郎朗擅长于弹钢琴。A. play动词原形；B. playing动名词或现在分词；C. to play动词不定式；D. plays动词三单形式。be good at doing sth.擅长于做某事，故答案为B。