[单项选择]

Passage 3

In economics, demand implies something slightly different from the common meaning of the term. The layman, for example, often used the term to mean the amount that is demanded of an item. Thus, if the price were to decrease and individuals wanted more of the item, it is commonly said that demand increases. To an economist, demand is a relationship between a series of prices and a series of corresponding quantities that are demanded at these prices. If one roads the previous sentences carefully, it should become apparent that them is a distinction between the quantity demanded and demand. This distinction is often a point of confusion and we all should be aware of and understand the difference between these two items. We repeat, therefore, that demand is a relationship between price and quantities demanded, and therefore suggests the effect of one (e.g., price) on the other (e.g. quantity demanded) . Therefore, knowledge of the d
A. increases as price decreases
B. can be predicted if there is a change in price
C. remains constant at the same price
D. is influenced by changes in the consumer’s income and tastes

[单项选择]
In economics, demand implies something slightly different from the common meaning of the term. The layman, for example, often used the term to mean the amount that is demanded of an item. Thus, if the price were to decrease and individuals wanted more of the item, it is commonly said that demand increases. To an economist, demand is a relationship between a series of prices and a series of corresponding quantities that are demanded at these prices. If one roads the previous sentences carefully, it should become apparent that them is a distinction between the quantity demanded and demand. This distinction is often a point of confusion and we all should be aware of and understand the difference between these two items. We repeat, therefore, that demand is a relationship between price and quantities demanded, and therefore suggests the effect of one (e.g., price) on the other (e.g. quantity demanded) . Therefore, knowledge of the d
A. is explained by income and substitution effects
B. explains why the additional units yield less utility
C. slows that the additional units yield less satisfaction
D. reflects the consumer’s desire to get the cheapest buy

[单项选择]The passage implies that the writer and her boyfriend live in
A．England. B．different countries.
C．the same city. D．the same country.
A. But after a while, life itself begins to feel unreal. I start to feel as though I’ve merged with my machines, taking data in, spitting them back out, just another node (节点) on the Net. Others on line report the same symptoms. We start to strongly dislike the outside forms of socializing. It’s like attending an A. meeting in a bar with everyone holding a half-sipped drink. We have become the Net opponents’ worst nightmare.

[单项选择]The passage implies that all of the following true is true concerning classical means of error correction EXCEPT
A. The string 1110 should be interpreted to represent 1
B. The string 2020 should be interpreted to indicate the presence of noise
C. A four digit code is more likely to be accurate than a three digit code
D. It is permissible to duplicate the bits in a code
E. Three digits in agreement, such as 111, indicate the absence of degradation

[填空题]The passage implies that Pat Cauley go to church for______.

[单项选择]This passage implies that victims of Alzheimer’s disease may______.


A. not remember childhood events
B. suffer a gradual worsening of cognitive functions
C. incur personality and behavioral changes
D. spend their last days in a long-term care institution

[单项选择]The passage implies that it is easy to buy the following things in the country EXCEPT______.
A) daily necessities C) designer clothes
B) fruits D) vegetables


A. The passage implies that it is easy to buy the following things in the country EXCEPT______.
B. daily necessities
C. fruits
D. designer clothes
E. vegetables

[填空题]We learn from the passage that a demand for theorists by society is______than that for society by theorists.

[单项选择]Passage One
The term profit in economics has a very precise meaning. Economists, however, often loosely refer to "good deals" or profitable ventures with no risk as profit opportunities. The general view of economics is that profit opportunities are rare. At any one time there are many people searching for such opportunities, and as a consequence few exist.
At major banks in big cities, you can buy foreign currencies. The prices of these currencies are determined in world markets. With dollars we can buy marks, with these marks we can buy francs, and with these francs we can buy back dollars. If, for example, the dollar-franc price is too low with respect to the other prices, there is an immediate rush to buy dollars and sell francs, not by ordinary citizens at bank windows, but by a few large currency traders in Tokyo or New York who watch prices every minute. Such a rush drives up the dollar-franc price to the no-profit-opportunity point. There are in fact
A. Profitable businesses without any risk.
B. Business deals that produce profit.
C. Business opportunities that many people search for.
D. Trading foreign currencies and stocks.

[单项选择]

Every time a person eats something he makes a nutritional decision. He accepts or rejects the food available to him at home for meals or snacks. Or he selects food for himself at many places in the community, such as supermarkets, drive-ins, restaurants, and food counters in drugstores. These selections make a difference in how an individual looks, how he feels, and how well he can work and play.
When a good assortment of food in appropriate amounts is selected and eaten, the consequences are more likely to be a desirable level of health and enough energy to allow one to be as active as one needs and wants to be. When choices are less than desirable, the consequences are likely to be poor health or limited energy or both.
Studies of diets of individuals in the United States show that food selection is a highly individual matter, even among young children. Furthermore, far too many individuals of all
A. celery
B. banana
C. milk
D. cabbage