单项选择题

The spacecraft will make a journey of over ______ years.

A．six
B．nine
C．twelve
D．sixteen
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单项选择题
The ceremony held by Gypsies also serves to call people’s attention to discrimination against them, especially in ______.
A．Eastern Europe
B．Northern Europe
C．Western Europe
D．Southern Europe
单项选择题
Cattle raising is not necessarily a profitable business because ______.
A．the demand is too low
B．the supply is too large
C．the cost is too high
D．the price is changeable
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