18. If you want to catch up with the team, the only way is _______________them.(抄近路追他们)(beeline)

17. For many weeks we _____________________ ( 习以为常 )seeing fallen trees and houses as well as dead animals. ( accustom )

16. I began to wonder why they ____________________ (反对我参加)extreme sports in the first place. ( object )

15. _________________ (分离)other continents for millions of years, Australia has many plants and animals that cannot be found anywhere else in the world. ( separate )

14. Everything _________________(考虑在内), they would have raised their output quickly. ( take)

13. More and more people _______________(意识到……重要性)of planting trees. ( aware )

12. __________________ (毫无疑问)that Taiwan is part of China. ( doubt )

11. In the late 1960s, the government passed laws to strengthened the rights of the black and __________________(改善他们的居住条件). ( improve )

20. Not until we know more______________________ (才能够)improve the situation. (able)

专题训练(21)

19. The role that women_________________________________(一直起的作用) in human history is of great importance. (play)