1. It seems to some experts that there are only 3 commonly-used video websites in this area: 56.com, Youku.com, Tudou.com and they_____ 90% of the market.
　　A. make up B. put up C. set up D. take up

　　2. It would be unwise to ____ much significance _____ these opinions.
　　A. accuse…of B. attach…to C. take…over D. concentrate…on

　　3. With so much noise of the traffic，I couldn’t ______ and do my research work.
　　A. put down B. settle down C. break down D. take down

　　4. ______, dear!Things won't be as bad as you think. There certainly will be chances for you.
　　A. Hurry up B. Look up C. Cheer up D. Make up

　　5. Please move that curtain as it is ______ the light.
　　A. blocking out B. watching out C. giving out D. hanging out

　　6. American Indians ________ about five percent of the U.S. population.
　　A. fill up B. bring up C. make up D. set up

　　7. We can’t reach him not because the line is busy, but because the telephone system has ________.
　　A. broken up B. broken down C. broken out D. broken into

　　8. The scientists have to ______ the company to provide them with enough money to do the research.
　　A. hold on B. keep on C. rely on D. agree on

　　9. When it _______ his academic records at college, he always tries hard to change the subject.
　　A. amounts to B. appeals to C. leads to D. comes to

　　10. Practising Chinese Kung fu can not only _______ one’s strength, but also develop one’s character.
　　A. bring up B. build up C. take up D. pull up

　　解析

　　1. D。很明显这里表示“这三个网站占据90%的互联网市场”，take up“拿起，占据，占去”符合题意。

　　2. B。题意为“认为这些意见很重要是不明智的”，attach…to(使)贴(系, 粘)在…上，(使)相关，认为有(重要性、意义等)符合题意，attach importance/significance to为常用短语。accuse…of指控某人犯某罪;take…over接管;concentrate…on专心于…。

　　3. B。“我静不下心来做我的研究工作”，settle down“定居，(使)安静下来，平静下来”适合本题语境。put down放下，记下;break down损坏，拆散;take down拆卸，记录。

　　4. C。根据后面的句意可知，这里应该是表示鼓励的用语，Cheer up“(使)高兴起来，(使)振作起来”符合句意。Hurry up快点;Look up抬头看;Make up编造，弥补，化装，构成。

　　5. A。既然是要把窗帘拉开，一定是它遮挡了光线，故block out“遮住，挡住”符合题意。watch out当心;give out分发，公布，耗尽;hang out伸出，晾晒。

　　6. C。本题为主动语态。被动式为“About five percent of the U.S. population is made up of American Indians.”，make up“构成，组成”。

　　7. B。句意为“你接不通他的电话不是因为线路忙，而是因为电话系统出了故障”，明显选B“出故障”(另外，参考226和239小题的解析)。

　　8. C。根据语意可知，科学家作科研的经费得依赖公司，故rely on“依赖，依靠”正确。

　　9. D。题意为“当提到他在大学的学习成绩时，他总是极力转移话题”，come to“谈到，提及，涉及”符合句意。amount to共计，意味着;appeals to向…投诉/呼吁;lead to导致。另外，when it comes to“一谈到，就…而论”是惯用句式。

　　10. B。句意“练习中国功夫不仅可以强身健体，还可以陶冶一个人的情操”，build up“逐步建立，增进，增强”适合语境。bring up教育, 培养, 提出, 呕吐;take up拿起，占去;pull up使停下，责备，追上。