第1题
During the past two decades, research has_our knowledge of daydreaming.
A. expanded B. emerged
C. descended D. conquered
第2题
The past two decades have witnessed great changes in information technology(翻译)
第3题
第4题
The biggest high-tech downturn in the past two decades came in 1985, when demand_____ just before the introduction of Intel’s 80386 microprocessor.
A、died out
B、 petered out
C、 came into being
D、 disappear
第5题
第6题
There have not been many genuine scientific revolutions in the past few decades because
A.there have been decreased returns in the research of fundamental science
B.there are too many important things for scientists to study
C.applied science and engineering take up too much time and energy
D.today's scientists are not as intelligent as those in the past
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