单项选择题

A．They were imported from European countries.
B．They migrated from distant colonies.
C．They were domesticated from local wild breeds.
D．They were the result of a careful breeding program.
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单项选择题
A．The foreign student needs to get credits of 24 semester hours.B．The foreign student needs to get at least 120 credits.C．The foreign student needs to get at least 120 credits plus thesis.D．The foreign student needs to get credits of 24 semester hours plus 14 consecutive semesters.
A．The foreign student needs to get credits of 24 semester hours.
B．The foreign student needs to get at least 120 credits.
C．The foreign student needs to get at least 120 credits plus thesis.
D．The foreign student needs to get credits of 24 semester hours plus 14 consecutive semesters.
单项选择题
A．Writing will not be easy.B．Writing will be less difficult.C．Writing has been boring.D．Writing has been enjoyable.
A．Writing will not be easy.
B．Writing will be less difficult.
C．Writing has been boring.
D．Writing has been enjoyable.
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