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1·David Graddol concludes that monoglot English graduates face a bleak economic future.

大卫·葛拉多尔认为，只会英语一种语言的毕业生面临着暗淡的经济前景。

2·When this was done, the monoglot babies had difficulty overcoming their learnt response, even when the researchers gave them further clues that a switch had taken place.

但也有很多老师却持反对意见，认为小孩子过早学习外语，容易在两种语言的转换中产生很多迷惑，最后甚至连母语都没有学到位。