重点讲解：
1. single out 单独挑出；特别选出；
We wanted to single out the main threat to civilisation.
我们想特别指出威胁文明的主要因素+;O4JDM%cB@66Yp。
2. admit to sth./doing sth. （常指不情愿地）承认，供认；
Up to two thirds of 14 to 16 year olds admit to buying drink illegally.
14到16岁的青少年中多达2/3的人承认非法买过酒yizx_3c*|[@h#aTW9o。
3. because of 因为；由于；
Inflation is considered to be undesirable because of its adverse effects on income distribution.
通货膨胀被认为是有害的，因为它会对收入分配产生不利影响R!sC+#l.(1pQyH7^A0。
4. apply for 申请；请求；
She only made the decision to apply for training after years of agonizing.
多年的苦苦思索之后，她才作出了申请培训的决定o6)7mSh|vpka;3DA|mW=。