单选题 If you're relying on Grandma to help with child care, it's time to reconsider. A new study of more than 54 000 women found that those who watched their grandkids 9 hours a week or more were 55% more likely to have a heart attack. These women may have less time to take care of their own health, says lead author Sunmin Lee, ScD, of the Harvard School of Public Health. Younger kids may pose more risk because they need more care. "However willing your mom might seem, it's up to you to figure out how much she can really handle," says Meredith Minkler, DrPH, a public-health professor at the University of California, Berkeley, and an expert on grandparents as caregivers. "It's not just about physical health. Older adults need time to connect with people of their own age. Social isolation is a major risk factor for illness." If your mom helps out, make sure she has breaks during the day, as well as "vacations" at regular intervals.

单选题As you think about writing a research paper, you may wonder how this job differs from other papers you have written. The basic difference is that most of the ideas that go into the research paper come from materials found in a library. The paper does not grow out of your personal experience and opinions as some other compositions do. Sometimes almost all of the information and ideas that appear in a research paper will come from books, magazine articles, etc. It is your job to find the information and present it in a coherent (连贯的) essay. At other times, you may be required to add your own judgements to the ideas you have collected from different materials. Both may be referred to as a "term paper" or a "research paper", and you should know how to do research as well as how to put together a good paper. Although writing a research paper is more difficult than writing an essay, the rewards (收益) of this work are great. As you increase your knowledge about a topic and begin making judgments, you will rapidly become an expert (专家) on your topic.

单选题{{B}}B{{/B}} In the United States, boys and girls start school when they are five years old. In some states they must stay in school until they are sixteen. Most students are seventeen years old when they graduate from secondary school (中学). Another name for secondary school is high school. Most children go to public elementary schools (小学) and secondary schools. The parents of public school pupils do not have to pay directly for these children's education because tax money supports the public schools. If a child attends a private school, his parents pay the school for the child's education. Today about half of the high school graduates go on to colleges and universities. Some colleges and universities receive tax money from the government. A student at a state university does not have to pay much if his parents live in that state. Private colleges and universities are expensive, however. Almost half of college students in the United States work while they are studying. When a student's family is not rich, he has to earn money for part of his college expenses.

单选题One afternoon I was sitting at my favorite table in a restaurant, waiting for the food I had ordered. Suddenly I (36) that a man sitting at a table near the window kept glancing in my direction, (37) he knew me. The man had a newspaper (38) in front of him, which he was (39) to read, but I could (40) that he was keeping an eye on me. When the waiter brought my (41) , the man was clearly puzzled (困惑) by the (42) way in which the waiter and I (43) each other. He seemed even more puzzled as (44) went on and it became (45) that all the waiters in the restaurant knew me. Finally he got up and went into the (46) . When he came out, he paid his bill and (47) without another glance in my direction. I called the owner of the restaurant and asked what the man had (48) "Well," he said, "that man was a detective (侦探). He (49) you here because he thought you were the man he (50) ." "What?" I said, showing my (51) . The owner continued, "He came into the kitchen and showed me a photo of the wanted man. I (52) say he looked very much like you! Of course, since we know you, we told him that he had made a (53) . " " Well, it's really (54) I came to a restaurant where I'm known,"I said." (55) ,I might have been in trouble./

单选题______have good memories.

单选题Women Today Is it true that women have had it so good? In many ways, yes. It is no (36) necessary (37) women to ask anyone's permission (38) social equality... In other (39) , (40) it is ready or not, society no longer has the powers to keep women (41) their place. We can see women bursting (42) of (43) used to be seen as their allotted place. This is (44) first generation of women (45) are taking their careers for granted. They are pushing (46) from the (47) and they are shoving (48) the top, (49) over prominent positions. Once the typical European family relied (50) one salary, but now most couples need two wage-packets (51) their standard of living. Today, only 10% of families in Britain are supported (52) the father alone. In less-affluent sections of society, the change is even more striking. With the decline of the manufacturing industries (53) once supported huge communities of working men, families are (54) to rely on the wage of women, often (55) part-time and in service industries. On present trends, by 2008 more women will he employed than men.

单选题______, if you like politics, polls can be great entertainment.

单选题 听下面5段对话或独白。每段对话或独白后有几个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。听每段对话或独白前，你将有5秒钟的时间阅读各个小题；听完后，各小题给出5秒钟的作答时间。每段对话或独白读两遍。

单选题Wheredidtheygolastsummer?

单选题Howmanypeoplebecamehomelessasaresultofthestorm?

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单选题Paracutin was the first volcano in the world which was seen from its birth ______ the present day.

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单选题In the program title" America' s Most Wanted" ( line 1, para 3 ), "most wanted" probably refers to______.

单选题What does the announcement tell people?

单选题—Are we supposed to take off our shoes before we enter? —No, you ______. A. shouldn't B. needn't C. mustn't D. can't