单项选择题

A．Fuel-efficient cars.
B．Air pollution caused by cars.
C．History of Automobile developments.
D．Electric-powered cars.

A.Fuel-efficient
B.
B．Air
C.
C．History
D.
D．Electric-powered
E.

你可能感兴趣的试题

单项选择题

A．Eat with them.
B．Travel with them.
C．Dress them in costumes.
D．Sleep with them.

A.Eat
B.
B．Travel
C.
C．Dress
D.
D．Sleep
E.

单项选择题

A．If you don't forget to feed it.
B．If you don't get bored easily.
C．If you don't trade it for something.
D．If you don't expect it to be anything but a pig.

A.If
B.
B．If
C.
C．If
D.
D．If
E.