单选题Whatdoesthedoctorsuggestthemanshoulddo?A.Lieinbed.B.Takesomemoremedicine.C.Eatmore.D.Drinklotsofliquids.

单选题When we think about happiness, we usually think of something extraordinary, a peak of great delight--and those peaks seem to get rarer the older we get. For a child, happiness has a magical quality. I remember making hide outs in newly cut hay, playing cops and robbers in the woods, getting a speaking part in the school play. Of course, kids also experience lows, but their delight at such peaks of pleasure as winning a race or getting a new bike is unreserved. For teenagers, or people under twenty, the concept of happiness changes. Suddenly it's conditional on such things as excitement, love, and popularity. I can still feel the agony of not being invited to a party that almost everyone else was going to. But I also recall the great happiness of being invited at another event to dance with a very handsome young man. In adulthood the things that bring great joy--birth, love, marriage--also bring responsibility and the risk of loss. Love may not last, sex isn't always good, and loved ones die. For adults, happiness is complicated. My dictionary explains happy as "lucky" or "fortunate", but I think a better explanation of happiness is "the capacity for enjoyment". The more we can enjoy what we have, the happier we are. It's easy to overlook the pleasure we get from loving and being loved, the company of friends, the freedom to love where we please, even good health. Nowadays, with so many choices and such pressure to succeed in every area, we have turned happiness into one mode thing we "gotta have". We're so self-conscious about our "right" to it that it's making us extremely unhappy. So we chase it and consider it to be the same as wealth and success, without noticing that the people who have those things aren't necessarily happier. While happiness may be more complex for us, the solution is the same as ever. Happiness isn't about what happens to us--it's about how we perceive what happens to us. It's the ability to find positive for every negative, and view a setback as a challenge. It's not wishing for what we don't have, but enjoying what we do possess.

单选题{{I}}Questions 11～13 are based on the following dialogue.{{/I}}

单选题Which of the following is not free to first-class passengers with this airline?

单选题{{B}}Text 3{{/B}} There were two widely divergent influences on the early development of statistical methods. Statistics had a mother who was dedicated to keeping orderly records of governmental units (state and statistics come from the same Latin root, status) and a gentlemanly gambling father who relied on mathematics to increase his skill at playing the odds in games of chance. The influence of the mother on the offspring, statistics, is represented by counting, measuring, describing, tabulating, ordering, and the taking of censuses—all of which led to modern descriptive statistics. The influence of the father came modern inferential statistics, which is based squarely on theories of probability. Descriptive statistics involves tabulating, depicting, and describing collections of data. These data may be either quantitative, such as measures of height, intelligence, or grade level—variables that are characterized by an underlying continuum—or the data may represent qualitative variables, such as sex, college major, or personality type. Large masses of data must generally undergo a process of summarization or reduction before they are comprehensible. Descriptive statistics is a tool for describing or summarizing or reducing to comprehensible form the properties of an otherwise unwieldy mass of data. Inferential statistics is a formalized body of methods for solving another class of problems that present great difficulties for the unaided human mind. This general class of problems characteristically involves attempts to make predictions using a sample of observations. For example, a school superintendent wishes to determine the proportion of children in a large school system who come to school without breakfast, have been vaccinated against flu, or whatever. Having a little knowledge of statistics, the superintendent would know that it is unnecessary and inefficient to question each child; the proportion for the entire district could be estimated fairly accurately from a sample of as few as 100 children. Thus, the purpose of inferential statistics is to predict or estimate characteristics of a population from a knowledge of the characteristics of only a sample of the population.

单选题It can be concluded from this passage about the Grand Canyon that ______.

单选题Whatistypicalofnon-readersaccordingtoearlyresearch?

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单选题Auctions(拍卖) are public sales of goods, conducted by an officially approved auctioneer. He asked the crowd to gather in the auction room to bid for various items on sale. He encourages buyers to bid higher figures and finally names the highest bidder as the buyer of the goods. This is called “knocking down” the goods, for the bidding ends when the auctioneer bangs a small hammer on a raised platform. The ancient Romans probably invented sales by auction and the English word comes from the Latin "autic", meaning "increase". The Romans usually sold in this way the spoils taken in war; these sales were called "sub hasta", meaning "under the spear", a spear being stuck in the ground as a signal for a crowd to gather. In England in the eighteenth and nineteenth centuries goods were often sold "by the candle"; a short candle was lit by the auctioneer and bids could be made while it was burning. Practically all goods can be sold by auction. Among these are coffee, skins, wool, tea, cocoa, furs, fruit, vegetables and wines. Auction sales are also usual for land and property, antique furniture, pictures, rare books, old china and works of art. The auction rooms at Chritie's and Sotheby's in London and New York are world famous. An auction is usually advertised beforehand with full particulars of the articles to be sold and where and when they can be viewed by the buyers. If the advertisement cannot give full details, catalogues are printed, and each group of goods to be sold together, called a "lot", is usually given a number. The auctioneer need not begin with lot one and continue the numerical order; he may wait until he notices the fact that certain buyers are in the room and then produce the lots they are likely to be interested in. The auctioneer's services are paid for in the form of a percentage of the price the goods are sold for. The auctioneer therefore has a direct interest in pushing up the bidding.

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单选题Who takes care of the elderly in the United States today? The fact is that family members provide over 80% of the care that elderly people need. In most cases the elderly live in their own homes. A very small percentage of America"s elderly people live in nursing homes. Samuel Preston, a sociologist at the University of Pennsylvania, studied how the American family is changing. He reported that by the time the average American couple reaches about 40 years of age, their parents are usually still alive. The statistics show the change in lifestyles and responsibilities of aging Americans. The average middle aged couple can look forward to caring for elderly parents sometime after their own children have grown up. Moreover, because people today live longer after an illness than people did years ago, family members must provide long-term care. These facts also mean that after caregivers provide for their elderly parents, who will eventually die, they will be old and may require care too. When they do, their husbands or wives will probably take care of them because they have had fewer children than their parents did. Because Americans are living longer than ever, more social workers have begun to study ways of care giving to improve the care of the elderly. They have found that all caregivers share a common characteristic: They believe that they are the best people for the job. The social workers have also discovered three basic reasons why the caregivers take on the responsibility of caring for an elderly, dependent relative. Many caregivers believe they had an obligation to help their relatives. Some think that helping others makes them feel more useful. Others hope that by helping someone now, they will deserve care when they become old and dependent.

单选题Whataretheman'shobbies?