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[单选题]

A number of factors account _____ the differences between the two scores.

A. with

B. for

C. out

D. on

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发布时间：2022-06-28

更多“A number of factors account _____ the differences between the two scores.”相关的问题

第1题

Vowel sounds are classified by a number of factors: the position of the tongue in the

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第2题

n = 7 × 193Column AColumn BThe number of distinct positive factors of n10A．if the quantity

n = 7 × 193

Column A Column B

The number of distinct positive factors of n 10

A．if the quantity in Column A is greater

B．if the quantity in Column B is greater

C．if the two quantity are equal

D．if the relationship cannot be determined from the information given

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第3题

Vowel sounds can be differentiated by a number of factors: the position of tongue in the mouth, the openness of the mouth, the shape of the lips, and the length of the vowels.()

Vowel sounds can be differentiated by a number of factors: the position of tongue in the mouth, the openness of the mouth, the shape of the lips, and the length of the vowels.（)

此题为判断题(对，错)。

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第4题

The success or failure of a product seems to be determined by a number of factors, one of

which, the author emphasizes, is the consumer's perception of the product's______

A．quality and price

B．usefulness and durability

C．need satisfying capability

D．appearance and inner packing

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第5题

Which one of the following factors does not reduce the effect of free surface？

A．minimum number of daily service tanks in use

B．where possible,tanks either full or empty

C．GZ max at minimum

D．bilges pumped out

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第6题

The price at which a stock can be sold depends upon a number of factors. Which statement below is not one of those factors （).

A.the financial condition, earnings record, and dividend record of the corporation

B.investor expectations of the corporations earning power

C.how high the par value

D.general business and economic conditions and prospects

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第7题

As heart disease continues to be the number-one killer in the United States, researchers h

ave become increasingly interested in identifying the potential risk factors that trigger heart attacks. High-fat diets and "life in the fast track" have long been known to contribute to the high incidence of heart failure. But according to new studies, the list of risk factors may be significantly longer and quite surprising.

Heart failure, for example, appears to have seasonal and temporal patterns. A higher percentage of heart attacks occur in cold weather, and more people experience heart failure on Monday than on any other day of the week. In addition, people are more susceptible to heart attacks in the first few hours after waking. Cardiologists first observed this morning phenomenon in the mid-1980, and have since discovered a number of possible causes. An early-morning rise in blood pressure, heart rate, and concentration of heart stimulating hormones, plus a reduction of blood flow to the heart, may all contribute to the higher incidence of heart attacks between the hours of 8:00 AM and 10:00 AM.

In other studies, both birthdays and bachelorhood have been implicated as risk factors. Statistics reveal that heart attack rates increase significantly for both females and males in the few days immediately preceding and following their birthdays. And unmarried men are more at risk for heart attacks than their married counterparts. Though stress is thought to be linked in some way to all of the aforementioned risk factors, intense research continues in the hope of further comprehending why and how heart failure is triggered.

What does the passage mainly discuss？

A．Risk factors in heart attacks.

B．Seasonal and temporal patterns of heart attacks.

C．Cardiology in the 1980s.

D．Diet and stress as factors in heart attacks.

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第8题

It is the business of the scientist to accumulate knowledge about the universe and all

that is in it, and to find, if he is able, common factors which explain the facts that he knows. He chooses, when he can, the method of the "controlled experiment". If he wants to find out the effect of light on growing plants, he takes many plants, as alike as possible. Some he stands in the sun, some in the shade, some in the dark; all the time keeping all other conditions (temperature, moisture, nourishment) the same. In this way, by keeping other conditions constant, and by varying the light only, the effect of light on the plants can be clearly seen. This method can be applied to a variety of situations.In the course of his inquiries the scientist may find what he thinks is one common explanation for an increasing number of facts. The explanation, if it seems consistently to fit various facts, is called a hypothesis. If a hypothesis continues to stand the test of numerous experiments and remains unshaken, it becomes a law.

1.In order to investigate the effect of light on growing plants the scientist____.

A、has to stand in the sun

B、can keep the same plants under different conditions of light

C、takes as many plants as possible

D、both b and c

2.The word "constant" in the first paragraph means____.

A、continual

B、faithful

C、various

D、unchanging

3.What should be kept the same in a "controlled experiment"？ ____

A、All the factors.

B、The common factors.

C、The factor under investigation.

D、All factors except the one being investigated.

4.According to the passage, a hypothesis is____.

A、an explanation for a large number of facts likely to be accepted as a truth

B、a factor which explains the facts already known to the scientist

C、an explanation that stands the test of numerous experiments

D、a common explanation that will definitely become a law

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第9题

It is clear that some people who participate in exercise training will develop injuries to

their bones, muscles, and joints(关节). Despite unfounded reports in the mass media of extremely high injury rates among adult exercisers, there have been few good studies of exercise injuries in populations. One of the difficulties in performing such studies has been the need to identify both the number of cases and the number of people at risk for injury. In other words, it is difficult to know the number of individuals injured and the total number of individuals exercising in the population. But these two figures are necessary in order to calculate(统计) true injury rates. Normally, injury is defined as an accident that causes a person to stop exercising for at least one week. The best available studies on injury rates show that about 25 to 30 percent of adult runners become "injured" (based on the above definition) over the course of a year. More serious injuries include those for which the injured person seeks medical care. If only they are considered, injury rates are much lower, perhaps in the range of 1 percent per year.

Little is known about the causes of exercise injuries. One factor that has been linked to injury is the amount of exercise; for example, individuals who run more miles are likelier to be injured than those who run fewer miles. Factors such as age, sex, body type, and experience have not been shown to be associated with risk of injury. It seems logical that structural abnormalities, sudden increases in training intensity, and types of equipment used are likely to be related to injury risk. However, data to support these opinions are not available.

What is the writer's attitude towards high injury rates among adult exercisers reported by the mass media？

A．Positive.

B．Indifferent.

C．Negative.

D．Reserved.

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第10题

听力原文：A person's social prestige seems to be determined mainly by his or her job. Occup

听力原文： A person's social prestige seems to be determined mainly by his or her job. Occupations are valued in terms of the incomes associated with them, although other factors can also be relevant—particularly the amount of education a given occupation requires and degree of control over others it provides. The holders of political power also tend to have high prestige. Unlike power and wealth, which do not seem to be becoming more equally shared, the symbols of prestige have become available to an increasing number of Americans. The main reason is the radical change in the nature of jobs over the course of this century. In 1900 nearly 40 percent of the labor force were farm workers and leas than 20 percent held white-collar jobs. At the beginning of the 1980a, however, leas than 5 percent of the labor force worked on farms and white-collar workers were the largest single occupational category. Blue-collar workers, the largest category in the mid-fifties, now constitute leas than a third of all workers. The increase in the proportion of high prestige jobs has allowed a much greater number of Americans to enjoy these statuses and the lifestyles that go with them.

(33)

A．Power.

B．Academic degree.

C．Wealth.

D．Diligence.

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