The atmosphere of Mars consists mostly of ______.

The atmosphere again acts ____our protective blanket on

[A] for

[B] with

[C] on

[D] as

As_____________ as men leave the atmosphere

[A] soon

[B] well

[C] much

[D] possible

A.气氛

B.使确信

C.同样地

D.到达

__________ in an atmosphere of simple living was what her parents wished for.

A) The girl was educated B) The girl educated

C) The girl’s being educated D) The girl to be educated

A.statistics

B.atmosphere

C.concentration

D.supplement

A.air

B.weather

C.atmosphere

D.climate

The atmosphere again acts our protective blanket on _____

[A] stars

[B] sun

[C] earth

[D] space

A.by which

B.in where

C.that

D.where

A.retains

B.restrains

C.remains

D.regains

［A］an environment without ultraviolet light

［B］a lot of homes

［C］an Earth like environment

［D］an environment with atmosphere