单项选择题

Experts say the space rock is probably ______more than U.S. $ 30,000.

A．weighty
B．costly
C．valuable
D．worth
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单项选择题
The issue ______at the conference is very important and it will create a sensation nationwide.
A．discussed
B．being discussed
C．is being discussed
D．has been discussed
单项选择题
In no country ______ Britain, it has been said, can one experience four seasons in the course of a single day.
A．other than
B．more than
C．better than
D．rather than
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