答案：CDBDB

詞匯講解

1. impulse 沖動，推動力

We were seized by a sudden impulse to run.
我們身不由己突然想跑.

On impulse, I picked up the phone and rang my sister in Australia.
我一時心血來潮，拿起話筒就給在澳大利亞的妹妹打了個電話。

2. taboo 禁忌,禁止接近,禁止使用

Questions and problems that were once taboo are now discussed openly.
一度視為犯忌的許多問題現在可以公開談論了.

Any mention of politics is taboo in his house.
在他家里一提政治就犯忌.

3. pursuit 追求,追趕,工作

He exercises everyday in pursuit of health.
他為了健康而每天鍛煉。

His life is spent in the pursuit of pleasure.
他一生都在尋歡作樂.

4. vulnerable 易受傷害的,有弱點的

She is very young and vulnerable to temptation/fraud.
她很年輕，易受誘惑／易受騙上當。

The potato is vulnerable to several pests.
馬鈴薯易受幾種害蟲的侵害.