单选题All the products mead in China are sold and distributed in______with the U.S. Export Administration Regulations and also local country rules. A. compliance B. prosperity C. merchandise D. intersection

单选题Your advice would be______valuable to him, who is at present at his wit's end

单选题He ______himself bitterly for his miserable behavior that evening.(2004年清华大学考博试题)

单选题His family watched until the plane ______ behind the clouds.

单选题They admitted that they shared the same______on the matter.(清华大学2007年试题)

单选题Everybody likes him. He is very ______ with all his colleagues. A. popular B. familiar C. close D. vulgar

单选题The writer is amazed by the black spider' s ______.

单选题The writer went to Fuji to ______.

单选题It seems oil ______ from this pipe for some time. We'll have to take the machine apart to put it right. A. had leaked B. is leaking C. leaked D. has been leaking

单选题The official was arrested for inability to______ all his fortune he has enjoyed.(2004年武汉大学考博试题)

单选题The only safe way of distinguishing between edible and poisonous mushrooms is to learn to ______ the individual species.

单选题The fire was the worst ______ ever to hit the town.

单选题Every chemical change either results from energy being sued to produce the change, or causes energy to be ______ in some form. A. given off B. put out C. set off D. used up

单选题Outsiders have ______ the success of Eastern Asia's economics with admiration, wonderment and sometimes hostility.

单选题The torch was______by a famous athlete at the opening of the sport meeting. A. implement B. deceive C. exemplify D. ignited

单选题Passage 1 Many of the most flexible examples of tool use in animals come from primates (the order that includes humans, apes, and monkeys). For example, many wild primates use objects to threaten outsiders. But there are many examples of tool use by other mammals, as well as by birds and other types of animals. Tools are used by many species in the capture or preparation of food. Chimpanzees use sticks and poles to bring out ants and termites from their hiding places. Among the most complex tool use observed in the wild is the use of stones by Ivory Coast chimpanzees to crack nuts open. They select a large flat stone as an anvil (a heavy block on which to place the nuts) and a smaller stone as a hammer. Stones suitable for use as anvils are not easy to find, and often a chimpanzee may carry a haul of nuts more than 40 meters to find a suitable anvil. The use of tools in chimpanzees is especially interesting because these animals sometimes modify tools to make them better suited for their intended purpose. To make a twig more effective for digging out termites, for example, a chimp may first strip it of its leaves. Surprisingly, there is also a species of bird that uses sticks to probe holes in the search for insects. One of the species of Galapagos finch, the woodpecker finch, picks up or breaks off a twig, cactus spine, or leaf stem. This primitive tool is then held in the beak and used to probe for insects in holes in trees that the bird cannot probe directly with its beak. Birds have been seen to carry twigs from tree to tree searching for prey. Tools may also be used for defense. Hermit crabs grab sea anemones with their claws and use them as weapons to repel their enemies. Studies have demonstrated that these crabs significantly improve their chances against predators such as octopus by means of this tactic. Also, many species of forest-dwelling primates defend themselves by throwing objects, including stones, at intruders.

单选题In a society where all aspects of our lives are dictated by scientific advances in technology, science is the essence of our existence. Without the vast advances made by chemists, physicists, biologist, geologist, and other diligent scientists, our standards of living would decline, our flourishing, wealthy nation might come to an economic depression, and our people would suffer from disease that could not be cured. As a society we ignorantly take advantage of the amenities provided by science, yet our lives would be altered interminably without them. Health care, one of the aspects of our society that separates us from our archaic ancestors, is founded exclusively on scientific discoveries and advances. Without the vaccines created by doctors, disease such as polio, measles, hepatitis, and the flu would pose a threat to our citizens, for although some of these disease may not be deadly, their side effects can be a vast detriment to an individual affected with the disease. In addition, science has developed perhaps the most awe-inspiring, vital invention in the history of the world, the computer. Without the presence of this machine, our world could exist, but the conveniences brought into life by the computer are unparalleled. Despite the greatness of present-day innovators and scientists and their revelations, it is requisite to examine the amenities of science that our culture so blatantly disregards. For instance, the light bulb, electricity, the telephone, running water, and the automobile are present-day staples of our society; however, they were not present until scientists discovered them. Because of the contribution of scientist, our world is ever metamorphosing, and this metamorphosis economically and personally comprise our society, whether our society is cognizant of this or not.