2. 外语
  3. The number of tourists from the west (have) (more than doubled) since China (adopted) the open door policy two decades (ago).

The number of tourists from the west (have) (more than doubled) since China (adopted) the open door policy two decades (ago).

admin2008-11-13  85
问题 The number of tourists from the west (have) (more than doubled) since China (adopted) the open door policy two decades (ago).
选项 A、have
B、more than doubled
C、adopted
D、ago
答案A
解析
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成人本科学位英语

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