Between 1975 and 1996, the number of overseas visitors expanded______27% on aver

游客2023-09-20  28

问题 Between 1975 and 1996, the number of overseas visitors expanded______27% on average each year.

选项 A、in
B、by
C、for
D、to

答案 B

解析 expand by…%表示“以某种百分比增长”,故选B。
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