问题 单项选择题

下列有关心绞痛的说法,正确的是()

A.冠状动脉管腔狭窄达横切面面积的50%时,患者常频发心绞痛

B.冠状动脉造影无阳性发现的一过性胸痛患者可除外心绞痛

C.舌下含服硝酸甘油,患者在3~5分钟内疼痛缓解,无效时提示患者并非冠心病或药物已失效

D.劳累稳定型心绞痛患者有时同样的劳力只在下午而不在早晨引起心绞痛,因为经一夜休息,心肌供血常得到改善

E.冠状动脉没有病变的肥厚型非梗阻型心肌病患者也可有心绞痛发生

答案

参考答案:E

完形填空

“Billy! It is February 25, 2099, seven o’clock. Time to   1  and go to school.” said the clock-robot   2  a mental voice. Then the kitchen-robot gave him toast and eggs. Billy was   3 . While he was eating, the whole wall  4  a TV screen and Billy thought that it was great having robots to do   5  for him. Billy ate his meal watching a TV  6 . When he finished eating, the   7  gave him his clothes very fast and   8  him. Then Billy went off to school.

When Billy went outside, he saw a car with no   9  waiting for him. The car said, “Hello, I will be   10  you to school every day. Now would you please   11  your school ID card?” said the car. So Billy showed the car his school ID card and got in. The   12  began to talk to Billy about his school and his schoolwork. After that the car said, “I will   13  your homework today   14  you will have a very, very important lesson to   15  in school today. Please put your homework on the blackboard.” Billy did so.

The car checked Billy’s homework and then said, “You are a(n)   16  student. All of your homework is   17 .” When they   18  the school, Billy said to the car, “Goodbye. See you later.” The car said to Billy, “Good luck in your school.” Billy got into the classroom and   19  his seat at the front of the room. Then his teacher came in and said, “Welcome, children! Today we will have a hard but   20  lesson — ‘How do robots help a human being?’...” 

1. A. get up               B. show up         C. take up          D. dress up

2. A. in                       B. on             C. with           D. by

3. A. angry              B. amazed        C. worried       D. quick

4. A. changed for              B. became of     C. looked like     D. turned into

5. A. something               B. anything        C. everything      D. nothing

6. A. show                        B. screen          C. set             D. box

7. A. driver-robot             B. clock-robot    C. kitchen-robot   D. clothes-robot

8. A. dressed                    B. cleaned       C. pushed        D. pleased

9. A. teacher                     B. student         C. robot          D. driver

10. A. driving                                             B. accommodating  

C. loading                                             D. holding

11. A. give                     B. show            C. send           D. lend

12. A. teacher                   B. driver          C. robot          D. car

13. A. check                   B. prepare         C. inspect         D. do

14. A. if                             B. when            C. but            D. because

15. A. miss                     B. learn            C. study           D. check

16. A. energetic                 B. optimistic       C. great           D. handsome

17. A. easy                           B. difficult                C. correct         D. wrong

18. A. rushed in                    B. got to         C. turned to      D. left off

19. A. took                 B. found         C. made         D. kept

20. A. easy                 B. important      C. boring       D. influential

名词解释