单项选择题

NASA announced this week that it plans to ______.

A．develop a new spaceship
B．enlarge its research field
C．send astronauts to the moon
D．cut down its expenses in space research
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单项选择题
What does Cathy say about Stan’s suggestion
A．They’d have to get permission.
B．Jack wouldn’t like it.
C．She thinks it might work.
D．The other assistants should be consulted.
单项选择题
According to the speaker, why is it difficult to find calendar pictures that are in good condition
A．Very few were produced.
B．Most were kept only a short time.
C．Most were printed on delicate paper.
D．Many have been acquired by collectors.
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