单项选择题

地球是太阳系迄今唯一被确定存在生命的星球吗？

A.是
B.不是
C.不确定
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单项选择题
Some independent artists’ talents would have been buried in the past because ____________. A、they would be unwilling to exhibit their works B、the public would show little interest in their works C、reaching the public would cost them a lot of money D、there would be too many independent artists
单项选择题
醋在生活中无法起到的作用是？
A.软化血管
B.除异味
C.除衣服褶皱
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