19._____ the secret of nature,the young scientist has little time for entertainment.( )
A. | Devoted to bring up | B. | Devoted himself to bring up | ||
C. | Devoted to bringing up | D. | Devoting to bring up |
18.It is reported that Americans eat too much protein every day,_______ as they actually need.( )
A. | twice as much | B. | as twice much | C. | much as twice | D. | as much twice |
16."You _____ for what you have done!"the boss threatened one of the office workers.( )
A. | could be punished | B. | shall be punished | ||
C. | will have been punished | D. | shall have been punished |
15.Acupuncture (针刺疗法) is ______ at reducing back pain ______ medicines,according to researchers.( )
A. | twice as effective; as | B. | as twice effective; than | ||
C. | effective as twice; as | D. | twice effective as; than |
12.When she returned home,she found the window open and something .( )
A. | stealing | B. | missed | C. | stolen | D. | to steal |
11.A good teacher has to be armed with the ability to keep students _______ throughout their learning process.( )
A. | motivating | B. | motivated | C. | motivate | D. | to be motivated |
10.-What are the workers talking about?
-They are discussing the idea the old worker at the meeting yesterday.( )
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-They are discussing the idea the old worker at the meeting yesterday.( )
A. | put forward | B. | came up | C. | set off | D. | brought out |