2. A)insects B)birds C)fish D)snakes
3. A) effect ; B) affect C)effected D) affected
4. A) because B)for the reason that C) because of D)since
5. A)months B)days C)minutes D)weeks
6. A)flight B)fly C)movement D)transportation
7. A)prevented from B)ordered by C)helped by D)intruded on
8. A)and B)but C)therefore D)however
9. A)portions B)parts C)sections D)kinds
10. A)try B)tries C)seem D)seems
11. A)things B)parts C)cells D)actions
12. A)awaken B)wake C)awakening D)wake-up
13. A)how B)why C)where D)what
14. A)We B)It C)They D)You
15. A)so B)with C)such D)if
您现在阅读的文章来自"中国人才指南网”,请记住我们的永久域名:www.cnrencai.com
责任编辑：wangpeng6151
