C．to buy；being D．buying；being

答案　B　[consider doing...考虑做......；consider...to be...认为......是......。]

7.One primary goal of UNESCO is to ____ modern knowledge society in which all people can participate in information and knowledge.

A. make up B. polish up C. build up D. give up

答案C [句意：建立现代化的知识社会，让所有人都能参与信息与知识，是联合国教科文组织的主要目标之一。build up"建立"；take up"从事"；polish up"改善，润色"；make up"弥补，虚构，整理，和解，化妆"。]

8．Do come here on Monday，________we，as planned，will take part in the gathering

of AIDS prevention volunteers.

A．then B．and C．therefore D．or

答案　B　[考查"祈使句＋and＋陈述句"句式。as planned为插入语。句意：星期一务必来这儿，按照预定的计划，我们要参加艾滋病预防志愿者的集会。]

9．-Have you seen Jack recently?

-No.He ________for another company now.

A．is working B．had worked

C．worked D．was working

答案　A　[考查时态。根据答语中的时间状语now可知叙述的是现在正在进

行的动作，语意表示他现在为另外一家公司工作，所以用现在进行时。]

10．The number of foreign students attending Chinese universities ________rising

steadily since 1990.

A．is B．are C．has been D．have been

答案　C　[考查不定量词修饰名词作主语时的主谓一致。语意：自1990年以来，上中国大学的外国学生数量在稳步上升。主语是the number of＋复数名词，故谓语动词用单数，又因时间状语是since 1990，所以用完成时态。]

11．Our government has taken some measures to overcome the lack of electricity，but

it may take some time ______we have enough power.

A．since B．after C．unless D．before

答案　D　[before在此处表示"......之后才"，符合题意。]

12．I thought the trip ________ comfortable，but actually，it was quite tiring.