题目内容

The satellite sent into space in__________ is in orbit__________ above earth.

A. the 1990s;450km
B. the 1990;450km
C. 1990s;450km
D. 1990;450kms

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Traveling in space, the guest will able to see the sun rise__________.

A. a day 15 time
B. a day 15 times
C. 15 time a day
D. 15 times a day

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A. spend
B. charge
C. change
D. budget

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The new design is certainly _________ (prefer) by many customers.

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