What' s the main topic of this passage?
A、
It' s about the tests of a new airliner before its flying.
B、
It' s about how to protect a new airliner.
C、
It' s about how to train a new pilot.
D、
It' s about what the airliner engineers should do.
【正确答案】
A
【答案解析】
单选题
Why air must be pumped into the plane?
A、
Because without air the plane can't fly.
B、
Because the plane needs air for its fuel.
C、
Because the passengers' lives depend on air.
D、
Because the passengers have paid for it.
【正确答案】
C
【答案解析】
单选题
What would happen if a small part of the plane were to crack?
A、
The plane would not go forward.
B、
The plane would explode.
C、
The plane would fall down.
D、
The plane would fly slowly.
【正确答案】
B
【答案解析】
单选题
For what purpose does the pilot shut off all the engines?
A、
To find out exactly what happens.
B、
To save fuel.
C、
To fly more slowly.
D、
To keep balance.
【正确答案】
A
【答案解析】
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