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如果不采取有效的办法防止试验方法的扩散,就会直接影响实验

时间:2018-01-21 16:33来源:未知 作者:admin 点击:
9.如果不采取有效的办法防止试验方法的扩散,就会直接影响实验的效度。 A. 错误 B. 正确 正确答案:B满分:2分 10.收集资料是按照研究任务的要求,运用研究计划中所确定的方法和手段,有步骤地收集与研究课题有关的资料与事实。 A. 错误 B. 正确 正确答案:B

13春学期《大学英语(四)》在线作业2
试卷总分:100 测试时间:--
单选题

、单选题(共 20 道试题,共 100 分。)
1. 103. Rod is determined to get a seat for the concert __________ it means standing in a queue all night.
A. provided
B. whatever
C. even if
D. as if
   满分:5 分
2. 104. We hadn't met for 20 years, but I recognized her __________ I saw her.
A. for the moment
B. the moment when
C. at the moment when
D. the moment
   满分:5 分
3. 54. A ______ person or government is one that is in favour of democracy.
A. independent
B. conservative
C. democratic
D. domestic
   满分:5 分
4. 95. Our hopes __________ and fell in the same instant.
A. aroused
B. arose
C. raised
D. rose
   满分:5 分
5. 57. A policeman's first duty is the ______ of the people.
A. benefit
B. safety
C. responsibility
D. protection
   满分:5 分
6. 29. Heads of the firm are considering, if indeed it is feasible, ______ newly-developed robots.
A. installing
B. install
C. to install
D. will install
   满分:5 分
7. 55. Only on unusual occasions do the police carry small arms to ______ public order.
A. create
B. publish
C. survive
D. maintain
   满分:5 分
8. 5. They have no ______ wish ______ to live and work for their motherland.
A. same … as
B. such … as
C. other … than
D. another … than
   满分:5 分
9. 19. ______ a bad habit is formed, it will not be easy to get rid of it.
A. Since
B. Because
C. While
D. Once
   满分:5 分
10. 23. ______ at the airport, Mrs. Robertson felt a great burden taken off her shoulders.
A. Seen her two sisters-in-law off
B. Having seen her two sisters-in law off
C. With her two sisters-in-law seen off
D. By seeing her two sisters-in-law off
   满分:5 分
11. 119. Petrol is refined from the __________ oil we take out of the ground.
A. A. fresh
B. original
C. rude
D. crude
   满分:5 分
12. 60. Those who previously lived in the centre would move to better but still old houses in outer ______.
A. territories
B. districts
C. sessions
D. grades
   满分:5 分
13. 78. Nylon fibers last longer and are stronger than natural fibers _______ silk or cotton.
A. such as
B. as regards
C. as well as
D. as such
   满分:5 分
14. 12. I can hardly believe that she bought the beautiful dress ______ only 50 yuan.
A. in
B. for
C. over
D. above
   满分:5 分
15. 76. They gave _______ broadcast while the performance was in process on the stage.
A. alive
B. live
C. living
D. lively
   满分:5 分
16. 40. I have not found my book yet; in fact, I am not sure ______ I could have done with it.
A. whether
B. where
C. when
D. what
   满分:5 分
17. 24. Even if you disagree with her, she is wroth ______.
A. listening
B. listen to
C. to listen to
D. listening to
   满分:5 分
18. 83. This official proposal met with even more _______ than Temple’s original plan.
A. depression
B. barricade
C. resistance
D. friction
   满分:5 分
19. 8. The scheme would be very expensive ______.
A. to carry out
B. to be carried on
C. to carry over
D. carry out
   满分:5 分
20. 34. As far as computer programming is concerned, this model is obviously superior ______ any of the others in our department.
A. to
B. than
C. over
D. from
   满分:5 分

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