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。
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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.
3. 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.
