These are our motives（B级）for doing it．

A . humor B . harbor C . hug D . labor

A．reasons B．excuses C．answers D．replies

plants and animals. However, the world's forests are getting smaller all the time. We are cutting down the trees because we need wood, and we need more farmland. Some people say that there will not be any forests like these in 20 or 30 years. What will happen if they disappear？ If we cut down our forests, a lot of plants and animals will disappear from the world. In a lot of places the new farmland will soon look like the old deserts. Crops will not grow there. It will not rain very often, and the weather will get very hot. Perhaps the climate of the world will change. This will be dangerous for everyone in the world. That is why we must take care of our forests. (1)、The passage mainly tells us about the importance of taking care of plants. A：T B：F (2)、Forests are homes for different kinds of animals. A：T B：F (3)、The need for more wood and more land help to protect our forests. A：T B：F (4)、We'll have more and greater forestsn in 20 or 30 years in some people's view. A：T B：F (5)、The writer thinks it necessary to protect the forests. A：T B：F

A．sink ever deeper B．from C．following D．that

A．reason B．excuses C．answers D．replies

Students of human migration speak of "push" and "pull" factors, which influence an individual's decision to move from one place to another. Push factors are associated with the place of origin. A push factor can be as simple and mild a matter as difficulty in finding a suitable job, or as traumatic as war, or severe famine. Obviously, refugees who leave their homes with guns pointed at their heads are motivated almost entirely by push factors (although pull factors do influence their choice of destination). Pull factors are those associated with the place of destination. Most often these are economic, such as better job opportunities or the availability of good land to farm. In general, pull factors add up to an apparently better chance for a good life and material well-being than is offered by the place of origin. When there is a choice between several attractive potential destinations, the deciding factor might be a non-economic consideration such as the presence of relatives, friends, or at least fellow countrymen already established in the new place who are willing to help the newcomers settle in. Besides push and pull factors, there are what the sociologists call "intervening obstacles." Even if push and (or) pull factors are very strong they still may be outweighed by intervening obstacles, such as the distance of the move, the trouble and cost of moving, the difficulty of entering the new country, and the problems likely to be encountered on arrival. The decision to move is also influenced by "personal factors" of the potential migrant. The prospect of packing up everything and moving to a new and perhaps very strange environment may appear interesting and challenging to an unmarried young man and appallingly difficult to a slightly older man with a wife and small kids. Similarly, the need to learn a new language and customs may excite one person and frighten another. Regardless of why people move, migration of large numbers of people causes conflict. The United States and other western countries have experienced adjustment problems with each new wave of immigrants. It has usually taken several decades for each group to be accepted into the mainstream of society in the host country. Today it is found that movement between nations often exceed international movements in volume. A．True B．False

A．reasons B．arguments C．targets D．pursllit

I've twice been to the wars, and as I survey the battlefield, something different is happening. It's the one-upmanship among parents. We see our kids' college rating as medals proving how well or how poorly we've raised them. But we can't acknowledge that our obsession is more about us than them. So we've contrived various justifications that turn out to be half-truths, prejudices or myths. It actually doesn't matter much whether Aaron and Nicole go to Stanford. Admissions anxiety afflicts only a minority of parents. It's true that getting into college has generally become tougher because the number of high-school graduates has grown. From 1994 to 2006, the increase is 28 percent. Still, 64 percent of freshmen attend schools where acceptance rates exceed 70 percent, and the application surge at elite schools dwarfs population growth. Take Yale. In 1994, it accepted 18.9 percent of 12,991 applicants; this year it admitted only 8.6 percent of 21,000. We have a full-blown prestige panic; we worry that there won't be enough medals to go around. Fearful parents prod their children to apply to more schools than ever. "The epicenters (of parental anxiety) used to be on the coasts, Boston, New York, Washington, Los Angeles", says Tom Parker, Amherst's admissions dean. "But it's radiated throughout the country". Underlying the hysteria is the belief that scarce elite degrees must be highly valuable. Their graduates must enjoy more success because they get a better education and develop better contacts. All that's plausible and mostly wrong. "We haven't found any convincing evidence that selectivity or prestige matters", says Ernest T. Pascarella of the University of Iowa, co author of "How College Affects Students", an 827-page evaluation of hundreds of studies of the college experience. Selective schools don't systematically employ better instructional approaches than less-selective schools, according to a study by Pascarella and George Kuh of Indiana University. Some do; some don't. On two measures professors' feedback and the number of essay exams selective schools do slightly worse. In the author's eyes, parents pushing their kids to an elite degree are ______. A．aggressive B．misguided C．reasonable D．failing

A、Some procrastination-reducing strategies have had proven success. B、Procrastination will never be completely eliminated. C、Procrastinators should employ a life coach to help them. D、Most procrastinators want to learn how to be more efficient.

A．Promotion opportunity B．Pay C．Being given authority D．Enjoying their work

A．has been writing； has written B．has been writing； wrote C．is writing； has been writing D．has written； has written

A．has been writing； has written B．has been writing； wrote C．is writing； has been writing D．has written； has written

A、 mice s inborn terror of cats B、 the evolution of Toxoplasma C、 a new study about the effects of a parasite on mice D、 a harmful parasite called Toxoplasma gondii

A、the analysis of the salinity of ocean waters B、the causes of the variation in oceanic salinity C、the importance of the changes in oceanic salinity D、the different forms of salts in ocean waters

1.A.drive B.drivers C.drives D.drove 2.A.consumer B.people C.sellers D.buyers 3.A.Needs B.Need C.Needing D.Needed 4.A.motivates B.motivation C.motive D.motivate 5.A.do B.to do C.does D.doing