单选题She graduated ______ an American college.[A] for[B] from[C] in[D] of

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Mary wants to visit her uncle's. She ______ for the bus for two hours but it has not come yet.

单选题Whattimewouldtheystopforlunch?

单选题听下面一段对话，回答下列问题。

单选题According to the passage, some native American "Dutch" expressions were related to the German instead of the Dutch, simply because .

单选题I love meeting people ______ alone. A.as well as B.so C.also D.but

单选题Readers can ______ quite well without knowing the exact meaning of each word.

单选题Oh! I have just had such a lovely dream!And then I woke,And all the dream went out like kettle-steam,Or chimney-smoke.My dream was all about -- how funny, though!I've only justDreamed it, and now it has begun to blowAway like dust.In it I went -- no! In my dream I had --No, that's not it!I can't remember, oh, it is too bad,My dream a bit.But I saw something beautiful, I'm sure--Then someone spoke,And then I didn't see it any more,Because I woke. What do we do every night, whether we know it or not? We dream. Researchers have found that We dream about the same amount on nights that we remember our dreams as on the nights that we don't. The amount of time we sleep is broken into cycles and states. There are two states of sleep: The first state, is called NREM, or non-rapid eye movement. It consists of four stages: Stage 1 is when we feel relaxed and sleepy. Stage 2 is when we move into a light sleep. We don't dream in these two stages. Stages 3 and 4 are called slow-wave sleep. In these stages, we are in a deep sleep and the dreams we have are ones we don't usually remember. The second state is called REM, or rapid eye movement. This is when we dream the most and have the dreams we remember the most. For many people, their REM dreams are the most meaningful and visually exciting. Approximately three-fourths of our total sleep time is spent in the NREM state and one-fourth in the REM state. We sleep by cycling through these states. Throughout the night, we experience four to six NREM/REM cycles.

单选题New York, 10 November -- 5:27 p. m. , yesterday, biggest power failure in the city"s history. Thousands of people got stuck in lifts. Martin Saltzman spent three hours between the 21 st and 22nd floors of the Empire State Building. "There were twelve of us. But no one panicked. We passed the time telling stories and playing word games. One man wanted to smoke but we didn"t let him. Firemen finally got us out." "It was the best night we"ve ever had. "said Angela Carraro, who runs and Italian restaurant on 42nd Street. "We had lots of candles on the tables and the waiters were carrying candles on their trays. The place was full -- and all night, in fact, for after we had closed, we let the people stay on and spend the night here." The zoos had their problems like everyone else. Keepers worked through the night. They used blankets to keep flying squirrels and small monkeys warm. While zoos had problems keeping warm, supermarkets had problems keeping cool. "All of our ice cream and frozen foods melted," said the manager of a store in downtown Manhattan. "They were worth $ 50 000." The big electric clock in the lobby (大厅) of the Waldorf-Astoria Hotel in downtown Manhattan started ticking (滴答) again at 5:25 this morning. It was almost on time.

单选题Whatisthefatherinterestedin?

单选题At the ______ of the bell, the students rushed into the classroom.[A] sight[B] noise[C] voice[D] sound

单选题What'stheprobablerelationshipbetweenthemanandthewoman?A.Professorandstudent.B.Headmasterandteacher.C.Friends.

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单选题The number of people in the world is growing. By the year 2000 world populathm is expected to grow to 6.2 billion. The fastest growth is in developing countries, where there is already a shortage of food, housing, and jobs. Africa is the fastest-growing part of the World. In Kenya, for example, the population will increase 10 times in the next 80 years. In Asia, a few countries have begun to reduce their population growth slowly. China still makes up about 21% of the world's population, but it has greatly slowed down its rate of growth. It is now growing at a rate of only 0.8% per year. In India, however, the population continues to grow, and it is expected to be even larger than the Chinese population by the year 2040. The population in India is growing three times faster than in. Australia, Japan, and the developed countries in Europe. In fact, European people are more worried about population decrease than increase. Eastern Europe- an countries are growing at a rate of only about 1%. The best news is that, in general, population growth has slowed down--from2.08% in 1970 to 1.6% in 1985. At the present rate, the earliest time that the world could reach zero population growth is 2040. At that time, there will probably be about eight billion people in the world.' It is possible, though, that the population might not really stop growing until much later. With people living longer, the number of elderly will have grown by 15% by that time. Nearly haft of the world's population will be living in cities. This is a situation that could cause a long list of other problems including pollution and a lack of food, water, housing, and jobs.

单选题阅读下列短文，从每题所给的四个选项([A]、[B]、[C]、[D])中选出最佳答案。{{B}}A{{/B}} Boxing was long viewed sickly. Generally forbidden by law in earlier days, the fighting was usually done with bare fists, and matches often lasted forty or fifty rounds. In 1882 John L. Sullivan, a fighter of great power, won the world heavyweight championship from Paddy Ryan in a bare fisted battle marked by hitting, scratching, and biting without any rule. Five years later, while fighting Patsy Cardiff at Minneapolis, Sullivan broke his right arm in the third round, but he continued fighting to the sixth round and won. In1889, Sullivan defeated Jade Kilrain with his bare fists in another championship fight, winning twenty thousand dollars and a diamond prize medal. His admirers talked then of running him for the next governor, but he traveled to Australia for a boxing tour instead, coming back only to lose his title in a twenty-one-round match with a young Californian named James J. Corbett. "Gentleman James" victory in this match marked a turning point; for it showed scientific boxing was over strength. But Corbett's title ended in 1897, when another boxer, Bob Fitzsimmons, in less than three seconds, achieved his feats and then Fitzsimmons knocked out an Irishman, won the heavyweight championship of the world, and invented the terrible "solar plexus punch".