题干
He has ________ all of the money and no one would like to help him.
A：used to
B：used as
C：used up
D：used for
答案(点此获取答案解析）
C
He has ________ all of the money and no one would like to help him.
A：used to
B：used as
C：used up
D：used for
聚变所释放出的能量相当于目前人类一年消耗的能量；地球上氦元素主要以
的形式存在。下列说法中正确的是