[单项选择]Though the hotel has been open for a few days, it is already ______ booked.
A. heavily
B. expectantly
C. immediately
D. quickly

[单项选择]Though the hotel has only been open for a few days, it is already ( ) booked.
A. expectantly
B. quickly
C. heavily
D. immediately

[单项选择]This ATM has been out of service for a few days. It should （） last week.
A. fix
B. be fixed
C. have fixed
D. have been fixed

[单项选择]Australia has always been a continent with few people mainly because ______.

[单项选择]Why has Australia always been a continent with few people?（）
A. Because Australia is too far away from Europe.
B. Because Australia is the least mountainous and most level of the world.s continents.
C. Because Australia is separated from the rest of the world by seas.
D. Because most of the continent is hot and dry.

[单项选择]It's been very cold the last few days. I think the winter's ______ already.
A. set in
B. set off
C. set on
D. set out

[单项选择]—You know Mr. Green has been ill for days —Yes, I wonder if he is ______ better now.
A. some
B. much
C. any
D. no

[单项选择]I knew the manager has been here for several days．because he came to see my father ______day．
A. other
B. another
C. the other
D. some

[单项选择]Perhaps open government' s effect has been greatest in______.
A. budget
B. supervision
C. decision-making
D. promulgation of rules and regulations

[单项选择]--Do you know that Mr. Zhang has been ill for days-- Yes. I wonder if he is ______ better now.
A. much
B. some
C. any
D. no

[单项选择]When has the heart-open surgery been possible
A. Only in the last fifty years.
B. From prehistoric times.
C. Since the nineteenth century.
D. Since the invention of values.

[单项选择]It has been rainy heavily these days. It is not ______ of a day for a walk after supper.
A. much
B. so much
C. too much
D. as much

[单项选择]Having been ill for a few years, she had a particularly fragile ____________.
A. constitution
B. institution
C. construction
D. instruction

[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