[单项选择]The laboratory technician often warns the trainees that they can't be（）careful in doing the experiment.
A. much
B. so
C. most
D. too

[单项选择]The laboratory technician often warns the trainees that they can't be（）careful in doing the experiment.
A. much
B. so
C. most
D. too

[单项选择]The teacher often warns the students that they can't be______ careful in answering an English paper.
A. much
B. so
C. most
D. too

[单项选择]The trainees were given copies of a finished manual to see whether they could themselves begin to ______ the inflexible, though tacit, rules for composing more of such instructional materials.
A. design
B. revise
C. disrupt
D. derive

[单项选择]The Greenpeace report warns that if Britain fails to take effective measures,______.
A. Britain will become a target of the EEC
B. Britain will be faced with a serious pollution problem
C. Britain will have difficulty maintaining its power stations
D. Britain will fall short of the EEC requirement

[单项选择]The passage warns of which of the following dangers
A. Companies in the United States may receive no protection from imports unless they actively seek protection from import competition.
B. Companies that seek legal protection from imports competition may incur legal costs that far exceed any possible gain.
C. Companies that are United States-owned but operate internationally may not be eligible for protection from import competition under the law of the countries in which their plants operate.
D. Companies that are not United States-owned may seek legal protection from import competition under United States import relief laws.

[单项选择]

Michael Mann also warns of a dangerous, and ultimately unsustainable, imperial turn in U. S. foreign policy. This "new imperialism," he argues in Incoherent Empire, is driven by a radical vision in which unilateral military power enforces U.S. rule and overcome global disorder.
Mann believes that this "imperial project" depends on a wildly inflated measure of American power; the United States may have awesome military muscle, but its political and economic capabilities are less overwhelming. This imbalance causes Washington to overemphasize the use of force, turning the quest for empire into "overconfident and hyperactive militarism." Such militarism generates what Mann calls "incoherent empire," which undermines U.S. leadership and creates more, not fewer, terrorists and rogue states.
Mann acknowledges that the United States is a central hub of the world economy and that the role of the dollar as the primary reserve currenc
A. server.
B. defender.
C. lawyer.
D. customer.

[单项选择]The author warns the reader to be cautious when ________.
A. buying items on sale
B. buying items on credit
C. buying items at discount
D. buying items advertised in newspapers

[单项选择]A technician has identified prohibited content on a user’s hard drive. Which of the following should be done NEXT?（）
A. Warn the user
B. Report through proper channels
C. Wipe the drive
D. Give the computer back to the user

[单项选择]The writer warns Americans that ______.