更多"Scientists have discovered in the p"的相关试题:
[单项选择]Now scientists have found in the past few years _________.
A. the exposure of DNA to the public is unnecessary
B. the tiny cell in DNA is a neat little machine
C. man knows nothing about DNA
D. man has much to learn about DNA
[单项选择]Scientists discovered that people's emotions are______.
A. controlled by their facial expression
B. influenced by their facial expression
C. identical with their facial expression
D. contrary to their facial expression
[单项选择]The past few decades in Birmingham have proved that slum clearance ______.
A. will usually take longer than expected
B. creates as many problems as it solves
C. often raises racial issues
D. always achieves its aims, if well planned
[单项选择]Seldom （） mistakes during my past few years of working here.
A. would I make
B. did I make
C. I did make
D. shah I make
[单项选择]Over the past few years, first radio, and now television, have shown the ______ public, who are after all the electorate, what in fact ______ when government bills are discussed and questions are asked.
A. average; turns up
B. ordinary; comes up
C. general; goes on
D. normal; lets on
[单项选择]In the past few years, the little land-bound country had been ______ mercilessly by financial crises.
A. deviated
B. expedited
C. decimated
D. buffeted
[单项选择]In the past few years the school has _____ a lot of money improving the teaching equipment.
A. cost
B. paid
C. spent
D. taken
[单项选择]In the past few decades,the influence of political parties has been declining（）
A. so the political parties are no longer important
B. so an independent presidential candidate can win a national election
C. but without the backing of a political party,a presidential candidate still cannot win
D. so the presidential election has become more unpredictable
[单项选择]In the past ten years skyscrapers have developed ______ in Chicago and New York City.
A. homogeneously
B. simultaneously
C. spontaneously
D. harmoniously
[单项选择]If Jane had taken more exercises in the past few years, she ______ so fat now.
[单项选择](Over) (the past) few years, medical researchers (are searching) for a means (to control) AIDS virus
A. Over
B. the past
C. are searching
D. to control
[单项选择]
Text 4 Over the past few decades, there has been a considerable increase in the use of mathematical analysis, both for solving everyday problems and for theoretical developments of many disciplines. For example, economics, biology, geography and medicine have all seen a considerable increase in the use of quantitative techniques. Twenty years ago applied mathematics meant the application of mathematics to problems in mechanics and little else--now, applied mathematics, or as many people prefer to call it, applicable mathematics, could refer to the use of mathematics in many varied areas. The one unifying theme that these applications have is that of mathematical modeling, by which we mean the construction of a mathematical model to describe the situation under study. This process of changing a real life problem into a mathematical one is not at all easy, we hasten to add, although one of the overall aims of this book is to improve your ability as a mathematical modeler. Th
A. Many books have been written on the topic of mathematical, modeling these years
B. Books devoted to mathematical modeling usually pay special attention to modeling formulation
C. The book introduced here does not claim that it had the best methods for teaching how to deal with real problems
D. The book introduced here takes the mastery of model formulation as its main purpose
