35. Traffic restrictions have come into effect in Beijing 　　　to improve the capital’s air quality and traffic situation for the 2008 Olympics.

　 　A. in order that　 B. in an attempt　　 C. at an attempt　 D. in a try

34. Platypus is a　 strange animal that lays eggs but　　　　 milk　　　　 its young.

　 A. feeds；to　　 B. feeds；for　　 C. fed；at　　 D. fed；on

33. Polar bears live　　　 on sea ice，which they use as a platform for hunting seals.

　　 A. most　　　 B. almost　　　 C. nearly　　 D. mostly

32. Women prefer to buy food which has already been prepared　 it reaches the market.

　　 A. after　　　 B. for　　　 　C. before　　 　　D. until

31. After being discovered by Dutch explorers in 1606，the eastern half of Australia　 ____by the British in 1770.

　　 A. was claimed　 B. claimed　 　C. was claiming　 D. has been claimed

30.The children of mothers who use cocaine are often born________ the drug.

　　 　 A. addicted to　 　 B. engaged in　　 C. related to　 　　D. concerned about

29. Russia will soon return 174 sq km of territory on the northeast border to China, 　　　________more than 40 years of negotiations.

　　 A. ending　　　 B. ended　　　 　C. to end　　　 　D. being ended