问题 选择题

将葡萄糖从人的前臂静脉注入,当到达肺部时,葡萄糖所经之处有(  )

①肺动脉②肺静脉③上腔静脉④下腔静脉⑤右心房⑥左心房⑦右心室⑧左心室⑨肺部毛细血管.

A.③④⑥⑦⑨

B.④③②①⑧

C.③⑤⑦①⑨

D.④③②①⑧

答案

血液循环的途径如图:

将葡萄糖从人的前臂静脉注入后,葡萄糖到达肺部位需要经过前臂静脉→③上腔静脉→⑤右心房→⑦右心室→①肺动脉→⑨肺部毛细血管(肺部).所以将葡萄糖从人的前臂静脉注入,当到达肺部时,葡萄糖所经之处有③⑤⑦①⑨.

故选:C.

完形填空

第二节完形填空(共20小题;每小题1分,共20分)

阅读下面短文,掌握其大意,从每题所给的A、B、C、D四个选项中,选出最佳选项,并在答题卡上将该项涂黑。

My teeth screamed. I couldn’t  21   them any longer. I finally   22   my fear of dentists and decided to get them fixed. But   23  ? I was a college student and barely   24   myself with part-time jobs.

Maybe I could  25   the worst one. I opened the Yellow Pages and called the first   26   within walking distance. The receptionist told me to come right over.   27   I hurried across the campus, I forgot the   28   in worrying about how I would pay the   29  .

In a few minutes I was in a chair being examined by a dentist who said, “Hmm!” as he examined my teeth. “Your teeth are in bad  30  .”

“I already knew that,” I  31   him and answered quickly to hide my   32  .

“But don’t worry. I’m going to fix them.”

“No, you’re not. I can’t  33   to pay you.” I started climbing out of the chair.

“You’re a student at the university, aren’t you?”

What  34   did that make? “Yes...”

“You’re going to graduate in a few years, aren’t you?”

“I hope so.”

“And then you expect to get a job, don’t you?”

“That’s my  35  .”

“Well, then you’ll pay me.  36   you concentrate on your classes and    37    the dentistry to me.”

I stared at him. He really  38   it. He calmly picked up his tools and fixed my aching teeth.

From that day on, I saw him every week until I had good teeth again. After graduation, I got a job and  39   his bill in a few months.

In the 40 years following, I’ve learned to call this man a “woodwork angel.” They are strangers who appear out of nowhere when I need help. They’ve lent and given me money, materials or equipment; they’ve taught me skills and helped me organize groups; sometimes they’ve rescued me  40   danger or making a big mistake.

21.   A. bear                        B. take                         C. treat                         D. forget

22.   A. identified                 B. admitted                   C. ignored                    D. expressed

23.   A. where               B. who                         C. why                         D. how

24.   A. changed                   B. provided                  C. supported                 D. enjoyed

25.   A. visit                         B. fix                           C. call                          D. cover

26.   A. teacher                     B. dentist               C. driver               D. operator

27.   A. As                          B. After                        C. Since                       D. Though

28.   A. class                        B. time                         C. address                     D. pain

29.   A. bill                          B. debt                         C. tax                           D. visit

30.   A. shape                       B. order                       C. size                          D. situation

31.   A. directed                   B. comforted         C. stopped                    D. advised

32.   A. anger                       B. fear                         C. hope                        D. trick

33.   A. agree                       B. wait                         C. afford               D. remember

34.   A. effort                       B. use                          C. difference                 D. offer

35.   A. plan                         B. picture                     C. purpose                    D. procedure

36.   A. As a result         B. In the meantime C. After that                 D. Ever since

37.   A. present                     B. show                        C. bring                       D. leave

38.   A. appreciated        B. meant               C. approved                  D. made

39.   A. passed               B. had                          C. settled               D. filled

40.   A. to                           B. in                            C. against                     D. from

单项选择题