Ⅰ.单词拼写
1．This mass ________ (灭绝) is caused by hunting, habitat loss and pollution.
2．What he has done recently is ________ (非法的)．
3．We'll take action ________ (立刻) to help him out of trouble.
4．The ________ (物种) are in danger of disappearing in the world.
5．When you get there, you can see there are ________ (海报) advertising the new movie throughout the town.
6．It is reported that rapid economic development threatens animal ________ (栖息地)．
7．Last year the number of students who graduated with a driving license reached 200,000, an ________ (平均数) of 40,000 per year.
