重点讲解：
1. die from 死于；
In fact, women are less likely to have high blood pressure or to die from heart attacks.
事实上,女性患高血压或死于心脏病的可能性较小。
2. respond to 应对；作出回应；作出反应；
So far the police have refused to respond to their provocations.
截至目前为止，警方并未对他们的挑衅作出反应。
3. a couple of 两个；几个；
I've seen her a couple of times before.
我以前见过她几次。
4. give up 放弃；戒除；
He suffered a serious injury that obliged him to give up work.
他受伤严重，不得已只好放弃工作。