A.need not have dressed up
B.must not have dressed up
C.did not need to dress up
D.must not dress up
A.I think which is
B.that I think is
C.which I think is
D.which I think it is
开始考试点击查看答案A.throwing
B.being thrown
C.having thrown
D.having been thrown
开始考试点击查看答案A.It is notIwhoam
B.It is notIthatis
C.It is not me who am
D.It is not me that is
开始考试点击查看答案A.Some
B.Some were
C.When some
D.That some
开始考试点击查看答案A.as
B.much
C.and
D.to
开始考试点击查看答案A.makes a cooling of the economy.
B.decreases the costs of high technology companies.
C.emphasizes the importance of unfilled jobs.
D.hinders the development of U. S. economy.
开始考试点击查看答案A.the workforce classification is as serious as thereason of education system.
B.twenty-first-century work are separated from the needsof the business world.
C.white-collar worker is only part of the problem ofeducation system.
D.blue-collar manual laborers are needed in agrarian-aged America.
开始考试点击查看答案A.wear gold-collar working clothes when they are on duty.
B.do better in combining their contributions and earningabilities.
C.grasp the knowledge and engage in labor work as well.
D.apply the arts knowledge to technology.
开始考试点击查看答案A.800,000 Technology Jobs Unfilled.
B.Gold-workers Needed.
C.U.S. Economy threatene
D.D.Schools Fail to Train Gold-workers.
开始考试点击查看答案A.indicate the dangers inherent in relying to a great extent on machines.
B.illustrate his views about the approach of mathematicians to problem solving.
C.compare the work of mathematicians with that of computer programmers.
D.provide one definition of intelligenc
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