A．communicationB．combinationC．connectionD．conjunction

, always asks his customers, if they are very young, whom the cigarettes are bought(51). One day, a little girl whom he had never seen before walked(52)into his shop and demanded twenty cigarettes. She had the(53)amount of money in her hand and seemed very sure of herself. Mr. Johnson was so(54)by her confident manner that he(55)to ask his usual question.(56), he asked her what kind of cigarettes she wanted. The girl replied(57)and handed him the money. While he was giving her the change, Mr. Johnson said laughingly that(58)she was so young she should(59)the packet in her pocket in case a policeman saw it.(60), the little girl did not seem to find this very funny. Without(61)smiling she took the(62)and walked towards the door. Suddenly she stopped, turned(63), and looked steadily at Mr. Johnson. There was a moment of silence and the tobacco-seller(64)what was going to say. All at once, in a clear,(65)voice, the girl declared, " My dad is a policeman," and with that she walked quickly out of the shop.

A．with

B．to

C．for

D．by

My relationship with the actors is fundamental to my work as a director.

A．impressive

B．public

C．essential

D．slight

You'd better put these documents in a (safe) place.

A． dark

B． secure

C． guarded

D． banned

What can we learn from the literature of the tribes of the native Americans?

A．About the everyday life of the native Americans.

B．About the arrival of Columbus.

C．About the experience of the first European settlers.

D．About the experience of those who died in the New England wilderness.

The word "invade" in the last paragraph is used to emphasize that ______.

A．the British do not like tourists

B．tourists to Britain are friendly

C．tourists come to Britain in large numbers

D．Britain is attacked by masses of tourists

Tickets must be purchased two weeks in advance.

A．booked

B．bought

C．sold

D．obtained

Research indicates that men find it easier to give up smoking than women.

A．proves

B．shows

C．finds

D．concludes

According to the passage, what kind of people would probably favor yellow? ______.

A．People who are passive and conservative.

B．People who are creative and aggressive.

C．People who are hopeful and active.

D．People who are ideal and dreamy.

is not easy to explain why one person is intelligent and another is not, or why one is cooperative and another is competitive.

Social scientists are, of course, extremely interested in these types of questions. They want to explain why we possess certain characteristics and exhibit certain behaviors. There are no clear answers yet, but two distinct schools of thought on the matter have been developed. As one might expect, the two approaches are very different from one another, and there is a great deal of debate between proponents of each theory. The controversy is often referred to as nature/nurture .

Those who support the "nature" side of the conflict believe that our personalities and behavior. patter, ns are largely determined by biological and genetic factors. That our environment has little, if anything, to do with our abilities, characteristics, and behavior. is central to this theory. Taken to an extreme, this theory maintains that our behavior. is predetermined to such a degree that we are almost completely governed by our instincts.

Proponents of the "nurture" theory, or, as they are often called, behaviorists claimed that our environment is more important than our biologically based instincts in determining how we will act. A behaviorist, B.F. Skinner, sees humans as beings whose behavior. is almost completely shaped by their surroundings. The behaviorists' view of the human being is quite mechanistic; they maintain that, like machines, humans respond to environmental stimuli as the basis of the behavior.

Neither of these theories can yet fully explain human behavior. In fact, it is quite likely that the key to our behavior. lies somewhere between these two extremes. That the controversy will continue for a long time is certain.

According to the passage, people have wondered for a long time

A. why one is different from another

B. how one has certain personalities and behaviors

C. why one is more intelligent than another

D. why one is cooperative and another is competitive

simply by encouraging their employees to exercise a little bit，researchers reported on Friday.

They said obese(肥胖的)employees had higher health-care costs，but lowered those expenses by exercising just a couple of times a week-without even losing any weight.

Feifei Wang and colleagues at the University of Michigan studied 23，500 workers at General Motors.

They estimated that getting the most sedentary(惯于久坐的)obese workers to exercise would have saved about$790，000 a year，or about 1.5 percent of health—care costs for the whole group.Company—wide.the potential savings could reach$7 1 million per year，they reported in the Journal of Occupational and Environmental Medicine

Of the whole group of workers.about 30 percent were of normal weight，45 percent were overweight(超重的)，and 25 percent were obese.Annual health-care costs averaged$2，200 for normal weight，$2，400 for the overweight，and$2，700 for obese employees.

But among workers who did no exercise，health—care costs went up by at least$100 a year，and were$3.000

But adding two or more days of light exercise——at least 20 minutes of exercise or work hard enough to increase heart rate and breathing——lowered costs by on average$500 per employee a year，the researchers found.

“This indicates that physical activity behavior. could reduce at least some of the harmful effects of excess body fat，and in consequence，help lower the health-care costs，”Wang and colleagues wrote.

第11题：How can employees help lower the health-care costs?

A．By taking more rest．

B．By eating less．

C．By exercising a little bit．

D．By saving more money．