arise和rise，raise的区别。

今天讲了一个知识点，arise和rise，raise的区别。

arise有appear之意，但也有rise的意思，都是不及物动词。

如：The hair on the back of my neck rose when I heard a scream at midnight. 此处rise可以变成arise。

但rise有情绪高涨的意思。如：Her spirits rose at the good news.

而raise是一个及物动词。

如：raise one's head/hands

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今天遇到一难题：Knowing the death could have been _____ if he only had take the diseases seriously, he felt.......

答案一个是prevented，一个是avoided。应该选第一个。因为prevent意思是：keep from happening；make defense against。而avoid的意思是：keep away from meeting，等等。