The tour of our country by the foreign visitors _______ on the Great Wall and other historical spots.

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问题 The tour of our country by the foreign visitors _______ on the Great Wall and other historical spots.

选项 A、confirmed
B、focused
C、instructed
D、hampered

答案B

解析 四个动词只有focused可以与介词on搭配,focus on意为“集中”。句意为:外国人到我国旅游集中于长城和其他历史景点。
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