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The three states that have seen the fastest growth in population in the past 20 years are（）
A . California,Arizona and New Mexico
B . California,Florida and Nevada
C . New Mexico,Texas and Florida
D . Arizona,Nevada and Florida
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The average height of the surface of the sea for all stages of the tide over a 19 year period is called（）.
A . mean high water
B . mean low water
C . half-tide level
D . mean sea level
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Which of the following SQL statements will return the year and average salary for all employees hired within a given year that have a salary greater than $30,000?（）
A . SELECT * FROM t1 UNION SELECT * FROM t2
B . SELECT * FROM t1 UNION DISTINCT SELECT * FROM t2
C . SELECT * FROM t1 INTERSECT SELECT * FROM t2
D . SELECT * FROM t1 WHERE (c1,c2)= (SELECT c1,c2 FROM t2)
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Number of blocks of stone: _______.Average weight of the blocks: _______.Number of slaves on the project: _______.Number of years taken: _______.The height of the pyramid: _______.Area covered: _______.Length of each side: _______.
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Number of blocks of stone: _______. Average weight of the blocks: _______. Number of slaves on the project: _______. Number of years taken: _______. The height of the pyramid: _______. Area covered: _______. Length of each side: _______.
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According to the passage 1, what is the most important reason that men die five years earlier on average than women?
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Great changes ________ in the past 20 years.
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The following information is available for the Stanley Company:Sales for year $1,000,000Average invested capital for year $312,500Return on investment 20%What is the operating income?
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129. The average height of the surface of the sea for all stages of the tide over a 19 year period is called _____.
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Last year the advertising rate ________ by 20 percent.
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听力原文：W：Read the report？ The：tuition fee was increased to ￡ 3000 a year. And other living expenses are on average ￡3000 a year.
M：Yeah, it's a huge increase. How are you managing your budget？
W：Well, (23)I got a student loan, which is just over ￡3 000, but also I get some money from my parents as well. They're happy to help out because it's towards an education；as long as we're not just wasting it all in drinking it all away. I am in the 3rd year.1 went to the end of my overdraft a couple of times and I'm lucky to have middle class parents who can help me out really.
M：But mostly your finances have been poor!
W：(24)That's because of the summer. If I just 1ived as a normal student and then worked during the summer it wouldn't be so bad—but I go on big holidays and things. This year I went to the Philippines and then came back overland from Singapore, which is a wicked experience, but eats into your finances obviously. What about you？
M：My parents came to the arrangement that first of all they paid the fees for me；secondly they paid my hall fees； and thirdly they gave me an allowance.
W：That's quite practical. But can you manage？
M：Yeah, I did excellently. I decided first of all I was going to get a first, which I did, and secondly 1 was not going to have any debts.(25)I put the money in a high interest account, so I came out with no debts at all. But I did live on Marmite sandwiches almost for three years.
(20)
A．She earned a scholarship which covers all her studies.
B．She got both a student loan and support from parents.
C．She received a student loan and had a part-time job.
D．She had overdrawn her loan and let parents help out.
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How does the speaker feel about the last lo or 20 years？
A．Encouraged．
B．Worded．
C．Unsatisfied．
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According to the passage, when could people start using a maglev commerciaily？A.In 5 years. B.In 10 years.C.In 20 years.D.In more than 20 years.
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University of Arizona researcher Dr. William Rathji says that after a study based on looking into garbage cans, the average family wastes at least $150 per year in food.
"Homemakers go out of their way to save pennies at the store and then don't realize that waste of edible (可食用的) foods adds up much more at home," said Dr. Rathji. He was one of about 100 food experts who met in Boise for a conference on food waste and ways to prevent it.
American families throw out between 8% and 20% of edible food at a cost of $4.5 billion per year. That's almost as much as the federal government spends every year for food stamps and child nutrition programs.
He found that food items which are costly and in short supply tend to be wasted more. During the 1973 meat shortage, meat waste increased to 9%, compared with 3% in 1974 and 1975. Sugar and sugar products waste jumped to 19% in 1975, when sugar prices doubled from the previous year.
Dr. Rathji theorizes that high prices force consumers to experiment, sometimes buy in large quantities. In the case of meat, sometimes low-priced cuts for unappetizing varieties are purchased, consumers then tend to waste more.
His theory is that the more variety in food bought, the more wasted. Regular bread is wasted at about a 10% rate, but specialty breads and rolls are wasted at a 20% rate.
If people are eating the same thing every day, they learn how to manage it. But if you're trying to pull something out of the cookbook every night, that's bound to be some waste.
Another finding is that lower income families waste less food than middle and upper income families. And the study found that dog food, which accounts for 8% of a shopping cart, is rarely wasted. Fresh produce and frozen items are more likely to be wasted.
The study also showed people with the most knowledge of safe, edible food waste the least. Much food is tossed out because a homemaker suspects it is spoiled when it is not.
1、Large quantities of food are thrown out because a homemaker____.
A、thinks they are not delicious
B、 says they taste bitter and hot
C、thinks they smell bad
D、 suspects they are spoiled when they are not
2、American families throw out between____of edible food every year.
A、5%～8%
B、 8%～10%
C、 20%～28%
D、8%～20%
3、When sugar prices doubled, waste of sugar____.
A、went down
B、went up
C、stayed the same
D、was cut in half
4、Which of the following statements is true？____
A、American housewives are not good homemakers.
B、Upper-income families are more wasteful than lower-income ones.
C、American families throw away almost as much food as they consume.
D、Americans waste a great deal of dog food.
5、When do American families waste more food？____
A、When prices are high.
B、When food is scarce.
C、When they think it is spoiled.
D、All of the above.
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The average employee office space costs an employer about $ 100, 000 a year.
A．True
B．False
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Statistics show that the average family size increases in inverse ratio to the mother's years of education.
A．统计数字表明，按平均数计算，母亲受教育年限越长，她的家庭人口就越少。
B．统计数字表明，家庭平均人口的增长与母亲受教育的年限成反比。
C．统计数字表明，母亲受教育的时间越长，她的家庭就越大。
D．统计数字表明，母亲受教育的水平随着她的家庭人口的增多而增高。
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Today the average American car owner drives 10,000 miles per year.
A．wealthy
B．ordinary
C．healthy
D．active
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输入20个实数存放在一维数组中，输出它们的平均值以及高于平均值的数的个数。 输入格式： scanf（"%f",&a[i]); 输出格式： printf（"The average=%fn",ave); printf（"The num is %dn",n); 输入样例： 20 30 50 30 20 输出样例： The average=30.000000 The num is 1
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At the beginning of the year, Breidel Company changes its inventory accounting method from first in first out to average cost. Assuming an environment of increasing prices, how will this accounting ch
A、No effect because this accounting change does not affect cash flows.
B、Less net cash in both the short-term forecast and the long-term forecast.
C、No effect on the short-term forecast but greater net cash in the long-term forecast.
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Its averaged （) profits over the past three years should be enough to pay one year's interest on the bonds.它在过去的3年中的平均可分配利润应足以支付债券一年的利息。
A．distributor
B．distribute
C．dismiss
D．distributable
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In 1950, a young man would have found it much easier than it is today to get and keep a job in the auto industry. And in that year the average autoworker could meet monthly mortgage (抵押贷款) payments on an average home with just 13.4 percent of his take-home pay. Today a similar mortgage would claim more than twice that share of his monthly earnings.
Other members of the autoworker’s family, however, might be less inclined to trade the present for the past. His retired parents would certainly have had less economic security back then. Throughout much of the 1960s, more than a quarter of men and women age 65 and older lived below the poverty level, compared to less than 10 percent in 2010.
In most states, his wife could not have taken out a loan or a credit card in her own name. In 42 states, a homemaker had no legal claim on the earnings of her husband. And nowhere did a wife have legal protection against family violence.
Most black workers would not want to return to a time when, on average, they earned 40 percent less than their white counterparts (职位相对的人), while racially restrictive agreements largely prevented them from buying into the suburban neighborhoods being built for white working-class families.
Today, new problems have emerged in the process of resolving old ones, but the solution is not to go back to the past. Some people may long for an era when divorce was still hard to come by. The spread of no-fault divorce has reduced the bargaining power of whichever spouse is more interested in continuing the relationship. And the breakup of such marriages has caused pain for many families.
The growing diversity of family life comes with new possibilities as well as new challenges. According to a recent poll, more than 80 percent of Americans believe that their current family is as close as the one in which they grew up, or closer. Finding ways to improve the lives of the remaining 20 percent seems more realistic than trying to restore an imaginary golden age.
61. What do we learn about American autoworkers in 1950？
A) They had less job security than they do today.
B) It was not too difficult for them to buy a house.
C) Their earnings were worth twice as much as today.
D) They were better off than workers in other industries.
62. What does the author say about retired people today？
A) They invariably long to return to the golden past.
B) They do not depend so much on social welfare.
C) They feel more secure economically than in the past.
D) They are usually unwilling to live with their children.
63. Why couldn’t black workers buy a house in a white suburban neighborhood？
A) They lacked the means of transportation.
B) They were subjected to racial inequality.
C) They were afraid to break the law.
D) They were too poor to afford it.
64. What is the result of no-fault divorce？
A) Divorce is easier to obtain.
B) Domestic violence is lessened.
C) It causes little pain to either side.
D) It contributes to social unrest.
65. What does the author suggest society do？
A) Get prepared to face any new challenges.
B) Try to better the current social security net.
C) Narrow the gap between blacks and whites.
D) Improve the lives of families with problems.
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But what if the next few years turn out to be below normal expectations？ Martin Barners of the Bank Credit Analyst in Montreal expects future stock returns to average just4 percent to 6 percent. Sound
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Blonnick Corp. has found that its weighted average collection period has increased from 50 days last year to 55 days this year, and its average days of receivables this year is 48 compared to 52 last
A、Blonnick has relaxed its credit standards this year.
B、Blonnicks credit customers are paying more slowly this year.
C、Credit sales are a greater part of Blonnicks business this year.
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Using historical index returns for an equities market over a 20-year period, an analyst has calculated the average annual return as 5.60% and the holding period return as 170%. The compound annual ind
A．2.69%.
B．5.09%.
C．5.24%.
