Exercise and physical activity f______ into four basic categories— endurance, strength, balance, and flexibility.

Software products may be (1)into four basic types: application programs, programming language processors, operating systems, and system utilities.

Application programs are programs that (2) useful tasks such as solving statistical problems, or keeping your company's books.

Programming language processors are programs that (3) the use if a computer language in a computer system. They are tools for the development of application programs.

Operation systems are programs that (4) the system resources and enable you to run application programs.

System utilities are special programs that (5) the usefulness of or add capabilities to a computer.

A．manage

B．perform

C．support

D．reduce

E．divided

从供选择的答案中选出应填入英语文句中()的正确的答案。

Software products may be (A) into four basic types: application programs, programming language processors, operating systems, and system utilities.

Application programs are programs that (B) useful tasks such as solving statistical problems, or keeping your company's books.

Programming language processors are programs that (C) the use if a computer language in a computer system. They are tools for the development of application programs.

Operating systems are programs that (D) the system resources and enable you to run application programs.

System utilities are special programs that (E) the usefulness of or add capabilities to a computer.

A～E: ① manage ② perform ③ support ④ reduce

⑤ divided ⑥ enhance ⑦ implemented ⑧ introduce

⑨ ranked ⑩ run

The four basic components of a fire are fuel, heat, oxygen and a chain reactionWhich of the following statements best describes what must be eliminated to extinguish a fire?

A.Any one component can be eliminated to extinguish a fire

B.Any two components must be eliminated to properly extinguish a fire

C.Any three components must be eliminated to properly extinguish a fire

D.Ali four components must be eliminated to extinguish any fire

There are four basic types of competition in business that form. a continuum from pure competition through monopolistic competition and oligopoly to monopoly. At one end of the continuum, pure competition results when every company has a similar product. Companies that deal in commodities such as wheat or corn are often involved in pure competition. In pure competition, it is often the ease and efficiency of distribution that influences purchase.

In contrast, in monopolistic competition, several companies may compete for the sale of items that may be substituted. The classic example of monopolistic competition is coffee and tea. If the price of one is perceived as too high, consumers may begin to purchase the other. Coupons and other discounts are often used as part of a marketing strategy to influence sales.

Oligopoly occurs when a few companies dominate the sales of a product or service. For example, only five airline carriers control more than 70 percent of all ticket sales in the United States. In oligopoly, serious competition is not considered desirable because it would result in reduced revenue for every company in the group. Although price wars do occur, in which all companies offer substantial savings to customers a somewhat similar tendency to raise prices simultaneously is also usual.

Finally, monopoly occurs when only one firm sells the product. Some monopolies have been tolerated for producers of goods and services that have been considered basic or essential, including electricity and water. In these eases, it is government control, rather than competition, that protects and influences sales.

Which of the following would be the best title for the passage?

A．Monopolies

B．The Commodity Market

C．The Competition Continuum

D．The Best Type of Competition

There are four basic types of competition in business that form. a continuum from pure competition through monopolistic competition and oligopoly(商品供应垄断)to monopoly. At one end of the continuum, pure competition results when every company has a similar product. Companies that deal in commodities such as wheat or corn are often involved in pure competition. In pure competition, it is often the ease and efficiency of distribution that influences purchase.

In contrast, in monopolistic competition, several companies may compete for the sale of items that may be substituted. The classic example of monopolistic competition is coffee and tea. If the price of one is perceived as too high, consumers may begin to purchase the other. Coupons and other discounts (折扣 ) are often used as part of a marketing strategy to influence sales.

Oligopoly occurs when a few companies dominate the sales of a product or service. For example, only five airline carriers control more than 70 percent of all ticket sales in the United States. In oligopoly, serious competition is not considered desirable because it would result in reduced revenue for every company in the group. Although price wars do occur, in which all companies offer substantial savings to customers, a somewhat similar tendency to raise prices simultaneously is also usual.

Finally, monopoly occurs when only one firm sells the product. Some monopolies have been tolerated for producers of goods and services that have been considered basic or essential, including electricity and water. In these cases, it is government control, rather than competition, that protects and influences sales.

Which of the following would be the best title for the passage?

A．Monopolies

B．The Commodity Market

C．The Competition Continuum

D．The Best Type of Competition

There are four basic types of competition in business that form. a continuum from pure competition through monopolistic competition and oligopoly (商品供应垄断) to monopoly. At one end of the continuum, pure competition results when every company has a similar product. Companies that deal in commodities such as wheat or corn are often involved in pure competition. In pure competition, it is often the ease and efficiency of distribution that influences purchase.

In contrast, in monopolistic competition, several companies may compete for the sale of items that may be substituted. The classic example of monopolistic competition is coffee and tea. If the price of one is perceived as too high, consumers may begin to purchase the other. Coupons and other discounts (折扣) are often used as part of a marketing strategy to influence sales.

Oligopoly occurs when a few companies dominate the sales of a product or service. For example, only five airline carriers control more than 70 percent of all ticket sales in the United States. In oligopoly, serious competition is not considered desirable because it would result in reduced revenue for every company in the group. Although price wars do occur, in which all companies offer substantial savings to customers, a somewhat similar tendency to raise prices simultaneously is also usual.

Finally, monopoly occurs when only one firm sells the product. Some monopolies have been tolerated for producers of goods and services that have been considered basic or essential, including electricity and water. In these cases, it is government control, rather than competition, that protects and influences sales.

Which of the following would be the best title for the passage?

A．Monopolies.

B．The Commodity Market.

C．The Competition Continuum.

D．The Best Type of Competition.

The elements can be classified broadly into three basic groupings, i.e.: A) ______, metalloids, and B) ______ because they have certain common properties.

Being Sick

People are physical, psychological (心理的) , spiritual (精神的) , and social human beings. They have certain basic needs that are necessary for life: physiological needs, the need for safety and security, love and belonging, esteem (尊重), and self-actualization. (46)

Culture influences the lives of most people. (47)

Being sick will affect a person physically, psychologically, and socially.

(48) Daily activities bring personal satisfaction, worth, and contact with others. Most people feel frustrated (灰心的) and angry when they are unable to perform. them. These feelings may become even greater if others must perform. daily functions for the patient.

A sick person has many fears and worries. (49) Some patients are able to explain why they are afraid. Others keep their feelings to themselves because they fear being laughed at for being afraid. A patient with a broken leg may be afraid of having a limp(跛行) or of not being able to walk again. A patient having surgery will probably be afraid that cancer will be found. (50)

How a person handles illness will be influenced by religion, culture, family, the patient's basic nature, the seriousness of the illness, and the speed of recovery. Doctors need to appreciate how patients are affected by illness.

A. These fears and anxieties are normal and expected.

B. Beliefs, values, habits, diet, health and illness practices may relate to a person's culture.

C. There is a fear of death, disability (残疾), chronic illness, and loss of function.

D. When people are unable to meet their own needs, they usually seek the service of a doctor.

E. The patient may be unable to perform. normal activities such as working, going to school, preparing meals, doing house or yard work, and participating in sports or hobbies.

F. One of a doctor's tasks is to help a patient to realize he is a socially human being.

(46)