问答题A farmer has a field containing a certain number of pigs and hens. Between them they have 36 heads and 100 feet. How many pigs and hens does the farmer have?

Mother gave Alice 30 dollars. She spends a fifth of the 30 dollars on books, a quarter of the remainder at a hairdresser’s and buys a new skirt for 10 dollars. How many dollars does she have now?

This phenomenon still has many of them wondering their heads.

A farmer buys a horse for $60. He sells it to his neighbour for $70. Then he discovers he could have made a better deal. He borrows $10 from his wife, and buys the horse back for $80. He then sells it to another neighbour for $90. How much money did he make?

Practice 6　　● In your company twenty employees receive, at the company’s expense, a personal copy of a daily financial newspaper, which they collect from reception each day. There have been disputes with the newspaper deliveryman about the correct number that should be delivered.　　● Your manager has asked you to investigate and you have discovered:　　● Employees who are not entitled to newspapers take them from reception.　　● The newspapers are delivered. And taken, before the receptionist arrives for work.　　● There are spare copies when employees are absent or away on business trips.　　● Write a short report of 200—250 words to your manager suggesting how to make sure that the correct number of newspapers is delivered each day and that the right person receive them.

The Shakespearean drama opens with a moral dilemma—how to choose between individual freedom and societal　　　　　　　　　　　　　　　　　　　　　Aneeds—then introduced the possibility that one does not always have the power to choose one’s own fate.No error　　　　　　　　B　　　　　　　　　　　　　　　　　　 C　　　　　　 　　　　　　　 D　　　　　　　　　　　　 E

Passage 1Of Ducks and Duck Eggs　　For people who like to keep poultry, ducks offer certain advantages over hens. Ducks are immune to some common diseases found in hens and are less vulnerable to others. Some breeds of duck produce bigger eggs than hens. In addition, ducks lay eggs over a longer season than hens do.　　Poultry keepers with gardens have less to worry about if they keep ducks rather than hens because the former are less apt to dig up plants and destroy roots. While both hens and ducks benefit the garden by eating pests, hens are known to damage herb and grass beds. Ducks, on the other hand, will search for insects and snails more carefully. Only very delicate plants are at risk from the broad, webbed feet of ducks.　　Like all waterbirds, ducks need access to water, and duck keepers typically provide this by building a pond. Something this large is not absolutely necessary, however, ducks need only to be able to dip their heads in the water to keep their nostrils clean. If a pond is provided though it is important to keep ducklings away from it until they are old enough to withstand the cool temperature of the water-about eight weeks.　　When keeping ducks, one has to consider just how many the land will support. Generally the rule is 100 ducks per-half hectare. If more than this proportion is introduced, there is a risk of compacting the soil, which can lead to muddy conditions for long periods as the rain is not easily absorbed into the ground.　　While ducks offer many advantages over hens, they must be given greater quantity of food, especially if regular eggs are desired. An adult duck will eat between 170 to 200 grams of food a day. If the ducks have access to grass and a pond, they will be able to find for themselves approximately 70% of their daily dietary, requirements in warmer months but less than half that in colder times. Therefore, it is important that they are fed enough food, such as grain, every day.　　Experienced duck keepers raise ducklings every three years or so because it is after this period of time that ducks’ egg-laying powers begin to seriously weaken. If the aim is to hatch duckling, keepers should be aware that not all ducks make good mothers, and that certain breeds of duck appear to be worse than others. The poor mothers abandon their eggs a few days after laying them. A sure way of making sure the rejected eggs hatch is to place them next to chicken eggs under a hen.　　The eggs of ducks as food for humans have a mixed reputation. This is because of a number of cases of salmonella food poisoning in Europe in the 1970s. Although it was never conclusively shown that duck eggs were to blame, the egg-eating public stopped buying and many duck egg producers went bankrupt. Indeed, there is a risk of salmonella poisoning when ducks lay their eggs in damp conditions, such as on ground that is constantly wet but the same can be said for the eggs of hens. And commercial duck egg production in France and England, where the out-breaks of salmonella poisoning took place, followed the same standards as those used in the hen egg industry, which experienced no salmonella problems. (Storage of eggs, whether those of hen or duck, can also be a factor in contamination. Studies have found that bacterial growth reaches potentially dangerous levels at storage temperatures of 5℃ or greater.)　　The salmonella scare was over by the early 1980s, but, at least in smaller markets like Australia and New Zealand, few producers wished to risk investment in ducks for fear of problems. No large-scale commercial duck egg production exists in these countries. It has thus been left to small producers, and, more commonly, home duck keepers.　　Classify the characteristics listed below as belonging to　　D         Ducks　　H         Hens　　B         Both ducks and hens　　NI        If there is no information in the reading passage　　Write the appropriate letters in boxes 1-8 on your answer sheet.　　1. lengthier laying period　　2. better mothers　　3. less likely to uproot plants　　4. dangerous to grass　　5. more eggs per week　　6. eat more grain　　7. beneficial to garden by eliminating pests　　8. more vulnerable to illness

How many skills may an agent have?（）

A farmer has a field containing a certain number of pigs and hens. Between them they have 36 heads and 100 feet. How many pigs and hens does the farmer have?

—How many girls are there in your class?—_____them ______ over twenty.

How many seats does the Senate of the Congress of the Unites States have?

A system has a mirrored data volume group that has a filesystem /data of 10 logical partitions. How many physical partitions will the filesystem have？（）