We generally arrange insurance to PICC.()
A.generally
B.arrange
C.insurance
D.to PICC
A.generally
B.arrange
C.insurance
D.to PICC
Researchers have established that when people are mentally engaged, biochemical changes occur in the brain that allow it to act more effectively in cognitive areas such as attention and memory. This is true regardless of age.
People will be alert and receptive if they are faced with information that gets them to think about things they are interested in. And someone with a history of doing more rather than less will go into old age more cognitively sound than someone who has not had an active mind.
Many experts are so convinced of the benefits of challenging the brain that they are putting the theory to work in their own lives. “The idea is not necessarily to learn to memorize enormous amounts of information,” says James Fozard, associate director of the National Institute on Again. “Most of us don't need that kindof skill. Such specific training is of less interest than being able to maintain mental alertness.” Fozard and others say they challenge their brains with different mental skill, both because they enjoy them and because they are sure that their range of activities will help the way their brains work.
Gene Cohen, acting director of the same institute, suggests that people in their old age should engage in mental and physical activities individually as well as in groups. Cohen says that we are frequently advised to keep physically active as we age, but older people need to keep mentally active as well. Those who do are more likely to maintain their intellectual abilities and to be generally happier and better adjusted. “The point is, you need to do both,” Cohen says. “Intellectual activity actually influences brain-cell health and size.”
6. People who are cognitively healthy are those _______.
A、who can remember large amounts of information
B、who are highly intelligent
C、whose minds are alert and receptive
D、who are good at recognizing different sounds
7. According to Fozards argument people can make their brains work more efficiently by _______.
A、constantly doing memory work
B、taking part in various mental activities
C、going through specific training
D、making frequent adjustments
8. The findings of James and other scientists in their work _________.
A、remain a theory to further proved
B、have been challenged by many other experts
C、have been generally accepted
D、are practiced by the researchers themselves
9. Older people are generally advised to ___________.
A、keep fit by going in for physical activities
B、keep mentally active by challenges through specific training
C、maintain mental alertness through specific training
D、maintain a balance between individual and group activities
10. What is the passage mainly about?
A、How biochemical changes occur in the human brain.
B、Why people should keep active not only physically but also mentally.
C、How intellectual activities influence brain-cell health
D、Why people should receive special mental training as they age.
We may think of the American economy, as consisting of two completely different sectors.The world of the giant corporations, which can be called the "industrial system", consists of 500 or 600 firms that provide "nearly all communications, nearly all production and distribution of electric power, much transportation, most manufacturing and mining, a substantial share of retail trade, and a considerable amount of entertainment." Outside of this industrial system fall most agricultural enterprises, some mining and trucking, professional and artistic pursuits, some retail trade, and most personal and domestic services.
The classical economic laws of supply and demand still apply to some degree.But today the industrial sector is characterized far more by planning and certainty than by the free play of market forces.It appears that it could scarcely be otherwise.In large corporations with advanced technological systems and complex organizations of highly trained specialists, plans for producing any one item are made well in advance.Such plans, once made, are hard to change.Because long-term planning demands certainty, market forces are avoided by various means.For example, the corporation may achieve "vertical integration" by buying companies that supply raw materials at one end of the process and distribution outlets at the other.Corporations may agree on "just prices" for things they buy and sell.They may enter mutually advantageous long-term contracts with suppliers and customers.Moreover, in their quest for certainty they generally have the support of the state.
26.The American giant corporations possess so many new characteristics that
A) highly educated managers are important for the corporations
B giant corporations become decentralized
C economic laws of the market are effective inside corporations
D heads of the giant corporations try to control the government
27.By the second paragraph, we know that .
A retail trade accounts for a big part in non-industrial system
B there are more giant corporations than agricultural enterprises
C giant corporations control every part of American economy
D giant corporations provide most of productions and services
28.From the whole passage, we can infer that American economy .
A is experiencing the rise of giant corporations
B is determined by hundreds of giant corporations
C has failed to balance supply and demand
D becomes highly-planned one
29.In the third sentence of last paragraph, the second "it" may refer to.
A classic economic law of supply and demand
B industrial sector
C American economy
D market force
30.Which of the following is not mentioned in the passage?
A American economy is characterized by high technology and giant corporations.
B American economy consists of industrial systems and agricultural enterprises.
C.Market economy is gradually replaced by planned economy.
D Highly trained specialists are needed.
A.this
B.which
C.whose
D.what
Which of the following risks are generally considered unpredictable:
A business risk
B financial risk
C inflation
D natural hazards
E taxes
A.hyponymy
B.contradicyion
C.antonymy
D.synonymy
A.appropriately
B.scarcely
C.generally
D.presumably
t according to the information of lessen One. Choose “True” if you believe it is true or “False” if not.)()
此题为判断题(对,错)。
136 Management reserve is generally intended to be used to:
A. implement additional unbudgeted scope
B. compensate for inaccurate estimates
C. cover major unforeseen catastrophes
D. cover unforeseen problems in the project
E. All of the above