单项选择题

According to the passage, the critical period for learning a language is ______.

A．at the age of ten months
B．between the ages of about ten months and ten years
C．at the age of ten years
D．from some time after birth to six or seven years

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热门试题

单项选择题

According to the study by Thorpe, a chaffinch reared in isolation after its birth ______.

A．never sings
B．cannot learn songs from other species of birds
C．never sings as well as other chaffinches
D．sings the same song all the time

单项选择题

Her remarks were not ______ offend her roommates.

A．such to
B．so as to
C．as much as to
D．such as to