单项选择题

A．Cotton.
B．They are not so nice.
C．They are dear.
D．They are beautiful.
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单项选择题
Compared with the traditional ones, the new satellites ______.
A．need long start-up times
B．are low-cost and small-sized
C．are very hard to operate
D．collect more information in orbit
单项选择题
A, He wants but he has no time now. B. He is leaving now, for he’s not willing. C. He is reluctant. D. It is possible for him to do that now.
A, He wants but he has no time now.
B. He is leaving now, for he’s not willing.
C. He is reluctant.
D. It is possible for him to do that now.
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