[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]

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 mod
A. reads it carefully
B. understands the general concept it provides
C. C .reads Section Ⅰ and Ⅱ as well
D. tries to solve the problems provided in Sections Ⅰ and Ⅱ

[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. be more proficient in mastering mathematical knowledge
B. be more proficient in applying his mathematical knowledge to real problem solving
C. have a better understanding of the various uses of mathematical models
D. fined real excitement and satisfaction in solving problems

[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]Scientists have discovered in the past few years that ______.
A. the exposure of DNA to the public is unnecessary
B. the tiny cell in DNA is a neat little machine
C. man actually knows nothing about DNA
D. man has much to learn about DNA

[单项选择]If Jane had taken more exercises in the past few years, she ______ so fat now.
A) would be C) wouldn't have been
B) wouldn't be D) would have been