C．struck 答案：D
D．flashed
解析：flash across one‘s mind “(想法)在大脑中一闪”。hit和 strike 是及物动词，occur 后接 to，都有同样的意思。
10．To keep healthy, Professor Smith ______ cycling as a regular form of exercise after he retired. A．took up C．carried out 答案：A
解析：考查动词短语。take up 有“开始从事/学习”的意思。B.赶上；C.执行；D.组成，打扮。
11．Though ______ money, his parents managed to send him to university. A．lacked C．lacking 答案：C
B．lacking of D．lacked in
B．caught up D．made up
解析：lack of 短语中的 lack 为名词，所以排除B项；主从句中主语一致，且从句谓语含有 be动词时，让步状语从句才能采用这样的省略句，若将从句补充完整，其结构为 though they were lacking money; lack 没有被动语态，故A与D不对。
12．Experts have been warning ______ of the health risks caused by passive smoking. A．at a time time
C．for some time time 答案：C
解析：本题考查与 time相关的介词短语。at a time “一次”；at one time “曾经”；for some time “一段时间”；由现在完成进行时构成 have been warning 可知用 “for＋时间段”。warn sb. of 为固定搭配。
13．E－shopping, when properly ______， can save us a lot of time and energy. A．done
B．is done D．doing
D．for the
B．at one
C．having done
答案：A
解析：考查过去分词做状语，相当于 when it is done。
14．Between 1405 and 1433, the Chinese treasure fleet set sail across the Indian Ocean several times. Zheng He‘s first stop was in ______ is today a part of Vietnam. A．what C．that 答案：A
解析：考查 what引导宾语从句，且在从句中做主语，表地点。
15．It is required that the students ______ mobile phones in their school, so seldom ______ them using one. A．should not use; you will see B．not use; will you see C．mustn't use; will you see D．not use; you will see 答案：B
B．which D．where
解析：考查虚拟语气和倒装语序。英语中表示命令、建议或要求的动词或名词后面的从句中通常使用should do形式的虚拟语气，should可以省略。seldom是否定副词，位于句首时，句子要采用部分倒装语序。
Ⅲ .完形填空
A 25－year－old student from Hubei was admitted into Tsinghua，China's most famous university, after an eight
year __1__ .Li Jun
comes from a poor family in a small village of Hubei Province.He first __2__ going to college in the year 2000__3__ he was admitted by a local school after __4__ from a secondary technical school at age 17.
A __5__ art student，he passed the exam again next year but __6__ school due to economic pressures in September 2002.Life seemed __7__ but Li didn't give in.He earned a __8__ by working part time in Wuhan's art rooms and tutoring students.But he never lost sight of his lifelong dream of __9__ the Academy of Arts&Design of Tsinghua University.Li__10__ the college entrance examination for five continuous years starting from 2003. __11__ ，he missed making the cut one mark last year.
In 2008，his fifth try，Li's efforts __12__ .He finished
the qualifying exam in his province and was finally admitted as a sculpture major into Tsinghua University.Every year, Li took art __13__ in Beijing and took exams from December to March.He then took cultural courses in his school till June.The rest of the year he spent on __14__ work.Li said he hadn't __15__ any money from his family since he graduated from the technical secondary school.Li said the reason he maintained for eight years was that he wanted to change his __16__ through knowledge.
__17__ by his contribution，Li Jun's university__18__ him 9 000 yuan out of his tuition fees of 11 450 yuan.An eightyear struggle may have come to an end for Li Jun，but a new __19__ has now begun.Li said he would not worry about repaying loans at present.He wants to study well and __20__ more scholarships.
1．A.research C．service
B．struggle
D．expectation