单选题Not much people realize that apples have been cultivated for over 3,000 years.

单选题In many ______ a lack of direction prompted the Republican Guard to call it a day.

单选题A growing number of people are pursuing advanced degrees without stepping ______ ． a university campus.

单选题The recent conference on the effective use of the seas and oceans was another attempt resolving major differences among countries with conflicting interests.

单选题According to the author, swans in captivity are ______.

单选题John is very diligent, but his pay isn't sufficient enough for his work. A. good B. much C. legal D. sound

单选题A considerable amount of time and money has been invested in ______ this system. A. defining B. implying C. reducing D. perfecting

单选题Rain {{U}}abates{{/U}} in the fall throughout most of the Appalachian Mountain region.

单选题Culture is activity of thought, and receptiveness to beauty and humane feeling. 1 of information have nothing to do with it. A merely well-informed man is the most useless 2 on God"s earth. What we should 3 at producing is men who 4 both culture and expert knowledge in some special direction. Their expert knowledge will give them the ground to start 5 , and their culture will lead them as 6 as philosophy and as high as 7 . We have to remember that the valuable 8 development is self-development, and that it 9 takes place between the ages of sixteen and thirty. As to training, the most important part is given by mothers before the age of twelve. In training a child to activity of thought, above all things we must 10 of what I will call "inert ideas"—that is to say, ideas that are merely 11 into the mind without being 12 , or tested, or thrown into fresh combinations. In the history of education, the most 13 phenomenon is that schools of learning, which at one epoch are alive with a craze for genius, in a 14 generation exhibit merely pedantry and routine. The reason is that they are overladen with inert ideas. Except at 15 intervals of intellectual motivation, education in the past has been radically 16 with inert ideas. That is the reason why 17 clever women, who have seen much of the world, are in middle life so much the most cultured part of the community. They have been saved from this horrible 18 of inert ideas. Every intellectual revolution which has ever stirred humanity 19 greatness has been a 20 protest against inert ideas.

单选题It wasn't long before Franks was Ua marked man/U. After he served in Desert Storm, directing helicopter and ground units, the Army's high command gave him the job of remaking the service for the post-cold war world.

单选题The guest turned upside down his glass as a signal that he would drink no more. A. conversed B. inversed C. traversed D. reversed

单选题We are not conscious of the extent of which work provides the psychological satisfaction that can make the difference between a full and empty life.

单选题Questions 81-90 are based on the following passage. It sounds like a science fiction, but researchers say it's a scientific fact: Microscopic organisms dubbed "killer algae" are paralyzing fish with unknown toxins and then eating away at their flesh. They might be making people sick, too. The name given to this single-cell organism, or dinoflagellate, is Pfiesteria piscimorte- literally, "fish killer. " It was discovered at North Carolina State University in 1988, but at the same time, few scientists believed in its existence, much less in its highly unusual predatory nature. But ongoing research has led to international acknowledgment of the phenomenon and, recently, research funding. Seemingly prompted by an unknown substance secreted by fish, the aggressive creature swims into action. It sends neurotoxins into the water and air, paralyzing a fish's nervous system, and causing it to gasp for air at the surface. Eventually the fish suffocates. The killer dinoflagellate then attaches itself to the fish and begins sucking away at its flesh. This macabre scenario may help solve several sea mysteries, such as why fishermen report seeing "fish walks" (fish trying to leave the water) and pools of dead fish with holes eaten through them. Whether humans are affected by the dinoflagellate's toxin remains to be seen. Researchers think it's unlikely eating fresh fish are in danger, but anyone with frequent exposure to the creature could be in peril. Several researchers working with the algae have reported bouts of memory loss and disorientation. To understand the killer algae further, scientists must fully characterize their toxin and determine what stimulates them to attack. They also need to know if the algae are hurting fish populations, and whether pollutants make them more likely to attack.

单选题Another American had been kidnapped in the West Beirut. Fifty-year-old Reed was ______ by four gunmen on Christmas morning.

单选题Ten years later, when he started his brief ______ in parliament and was back to London, he invited the Speaker to dinner at the hotel. A. stay B. spell C. work D. visit

单选题The 20th-century poem suggests to something we have been able to find nothing about.

单选题Metals ______ when cooled and expand when heated. A. decrease B. reduce C. condense D. contract

单选题The hands on this clock are lubricate so that it can be seen in the dark.

单选题There has been enough playing around, so let's get down to business. A. begin our work B. make a deal C. reach an agreement D. change our plan

单选题Both coffee and tea have beneficial as well as ______ side-effects; while they stimulate the heart and help overcome fatigue, they also cause insomnia and other nervous disorder.