单项选择题

A．Nature changed our environment over the years.
B．We must avoid wasting resources and polluting our environment.
C．Our resources are nearly used up.
D．Trips to other planets will help eliminate pollution.
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单项选择题
A．In a bookstore.B．At the camera shop.C．In a hospital.D．At a jewelry store.
A．In a bookstore.
B．At the camera shop.
C．In a hospital.
D．At a jewelry store.
单项选择题
A．You must join a football team to learn a language.B．Language learning is somewhat like playing football.C．In order to learn a language well you must have lost of practice on all the skills.D．You must talk with people a lot.
A．You must join a football team to learn a language.
B．Language learning is somewhat like playing football.
C．In order to learn a language well you must have lost of practice on all the skills.
D．You must talk with people a lot.
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