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【单选题】
—How long _______ Korean singer Jang Nara _______ China? —Four years. She can speak and sing in Chinese. [ ]A.
does; go to
B.
/ ; was in
C.
has; been to
D.
has; been in
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【简答题】2/什么叫做作用效应 ? 什么叫做结构抗力 ?
【单选题】It was a stroke of luck that she had always been able to write with ______ hand, which sometimes helped her a lot.
A.
both
B.
each
C.
every
D.
either