题目:
Shares on the stock market have _____ as a result of a worldwide economic downturn.
A. turned B.changed C.floated D.fluctuated
问题:这里我选了D,答案给的C,解释是float有汇率浮动的意思,但是fluctuate同样有这个意思呀,而且我上网搜,很多网页给的答案又是D。老师,正确答案和解释到底是什么呀?
float 是货币方面的专用术语,fluctuate不能用于这种情况。