International migration differs from internal movement in distance and volume, but share the similar______. Sometimes interveni

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问题 International migration differs from internal movement in distance and volume, but share the similar______.
Sometimes intervening obstacles may _____ push and/or pull factors.

选项

答案outweigh

解析 由题干关键词intervening obstacles和push and/or pull factors定位到第四段第二句。Even if push and/or pull factors are very strong they still may be outweighed by intervening obstacles…即使推力和拉力因素之一或两者都很强烈,它们也可能抵不过介入障碍。
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