31.With a total of 1,300 million people, China is one of the most densely _____ countries in the world.

　　A、populated

　　B、polluted

　　C、crowded

　　D、concentrated

　　32.It wasn’t a good thing; _____, it was a huge mistake.

　　A、on the whole

　　B、on the contrary

　　C、on the average

　　D、on the other hand

　　33.It’s a shame that he is still _____ his parents; he is already 25 years old.

　　A、depending on

　　B、growing on

　　C、focusing on

　　D、feeding on

　　34.Will you _____ it that this letter gets mailed today?

　　A、see off

　　B、see to

　　C、look after

　　D、look into

　　35.She _____ her research into the cause of cancer in spite of financial problems.

　　A、carried away

　　B、put forward

　　C、consisted in

　　D、persisted in

　　36.Tim stopped and stayed for a moment to _____ himself that he was not being followed.

　　A、insure

　　B、assure

　　C、confirm

　　D、confine

　　37.Many foreigners in China enjoy watching the news on CCTV _____ .

　　A、Program

　　B、Performance

　　C、Channel

　　D、Play

　　38.I tried to get through, but there were too many people _____ my way.

　　A、blocking

　　B、delaying

　　C、holding

　　D、stopping

　　39.To _____ their new product, they are selling it at half price for a month.

　　A、raise

　　B、improve

　　C、promote

　　D、increase

　　40.The local authorities decided to keep the old temple for its historical _____.

　　A、value

　　B、benefit

　　C、wealth

　　D、property

　　emember what happened on that day.

　　41. Just outside the ruins _____ a magnificent building surrounded by many tall trees.

　　A、is

　　B、be

　　C、are

　　D、will be

　　42. Linda didn’t go to the movie last night because she _____ for the final examination until 10 p.m.

　　A、should have prepared

　　B、had to prepare

　　C、must have prepared

　　D、would have to prepare

　　43. Just after putting away the letter, _____.

　　A、the telephone rang loud

　　B、someone called Brown

　　C、the telephone was ringing

　　D、Brown heard the telephone ring

　　44. Laurie is reported _____ the U.S. figure skating championship nine times.

　　A、having won

　　B、has won

　　C、to have won

　　D、winning

　　45. The evidence suggests that single fathers _____ more likely to work than single mothers.

　　A、should be

　　B、be

　　C、will be

　　D、are

　　46. The man was fined because he was caught _____ a tree.

　　A、cut

　　B、to cut

　　C、cutting

　　D、be cutting

　　47. What is the way people have thought of _____ enough money to help the poor children who can’t go to school?

　　A、to raise

　　B、raising

　　C、having raised

　　D、raised

　　48. While shopping, people sometimes can’t help _____ something they actually don’t need.

　　A、to buy

　　B、buy

　　C、to buying

　　D、buying

　　49. The question of _____ the traffic accident happened hasn’t been answered yet, though the police have made on-the-spot investigation.

　　A、that

　　B、whether

　　C、how

　　D、whenever

　　50. _____ can be seen from the comparison of the two charts, sales of automobiles jumped 3.2 percent in October.

　　A、As

　　B、What

　　C、So

　　D、That

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