1. 选词填空

in relief; protect…from…; pay close attention to; in danger of; burst into laughter; in peace; die out

1. （1） As we all know, many endangered species their natural enemies in this reserve.
3. （2） Not until we succeed in letting wildlife live can we smile in relief.
5. （3） These are the problems that controllers of free tax zones and business circles .
7. （4） Therefore, "haha point" refers to the certain threshold (临界点) where you can be amused and .
9. （5） The wild koalas are nearly .
11. （6） When she was told the insect biting her was not poisonous, she smiled .
13. （7） Lots of animals aredisappearing from the earth with people hunting them more and more often.