单选题Women"s minds work differently from men"s. At least, that is what most men are convinced of. Psychologists view the subject either as a matter of frustration or a joke. Now the biologists have moved into this minefield, and some of them have found that there are real differences between the brains of men and women. But being different, they point out hurriedly, is not the same as being better or worse. There is, however, a definite structural variation between the male and female brain. The difference is in a part of the brain that is used in the most complex intellectual processes—the link between the two halves of the brain. The two halves are linked by a trunk line of between 200 and 300 million nerves, the corpus callosum (胼胝体). Scientists have found quite recently that the corpus callosum in women is always larger and probably richer in nerve fibers than it is in men. This is the first time that a structural difference has been found between the brains of women and men and it must have some significance. The question is "What?", and, if this difference exists, are there others? Research shows that present-day women think differently and behave differently from men. Are some of these differences biological and inborn, a result of evolution? We tend to think that is the influence of society that produces these differences. But could we be wrong? Research showed that these two halves of the brain had different functions, and that the corpus callosum enabled them to work together. For most people, the left half is used for word-handing, analytical and logical activities; the right half works on pictures, patterns and forms. We need both halves working together. And the better the connections, the more harmoniously the two halves work. And, according to research findings, women have the better connections. But it isn"t all that easy to explain the actual differences between skills of men and women on this basis. In schools throughout the world girls tend to be better than boys at "language subjects" and boys better at maths and physics. If these differences correspond with the differences in the hemispheric trunk line, there is an unalterable distinction between the sexes. We shan"t know for a while, partly because we don"t know of any precise relationship between abilities in school subject and the functioning of the two halves of the brain, and we cannot understand how the two halves interact via the corpus callosum. But this striking difference must have some effect and, because the difference is in the parts of the brain involved in intellect, we should be looking for differences in intellectual processing.

单选题Once the baby has mastered the idea that space is three-dimensional, it ______ out and begins grasping various kinds of objects.

单选题______inflation, driven by rising food and oil costs, is striking hardest at the world's very poor, who are forced to spend 60 to 80 percent of their income on food.

单选题Some people think it's ______ to smoke with a cigarette holder. A. flexible B. sophisticated C. versatile D. productive

单选题 Even plants can run a fever, especially when they are under attack by insects or disease. But{{U}} (71) {{/U}}humans, plants can have their temperature{{U}} (72) {{/U}}from 3,000 feet away—straight up. A decade ago, {{U}}(73) {{/U}}the infrared (红外线的) scanning technology developed for military purpose and other satellites, physicist Stephen Paley{{U}} (74) {{/U}}a quick way to take the temperature of crops to determine{{U}} (75) {{/U}}ones are under stress. The goal was to let farmers{{U}} (76) {{/U}}target pesticide spraying{{U}} (77) {{/U}}rain poison on a whole field, which{{U}} (78) {{/U}}includes plants that don't have the pest problem. Even better, Paley's Remote Scanning Services Company could detect crop problem before they became{{U}} (79) {{/U}}to the eye. Mounted on a plane flown at 3,000 feet{{U}} (80) {{/U}}, an infrared scanner measured the heat emitted by crops. The data were{{U}} (81) {{/U}}. into a color-coded map showing{{U}} (82) {{/U}}plants were running "fevers". Farmers could then spot spray, using 50 to 70 percent less pesticide than they{{U}} (83) {{/U}}would. The bad news is that Paley's company closed down in 1984, after only three years. Farmers{{U}} (84) {{/U}}the new technology and long-term backers were hard{{U}} (85) {{/U}}. But with the renewed concern about pesticides on produce, and refinements in infrared scanning, Paley hopes to{{U}} (86) {{/U}}into operation. Agriculture experts have no doubt the technology works. "This technique can be used{{U}} (87) {{/U}}75 percent of agricultural land in the United States," says George Oerther of Texas A&M. Ray Jackson, who recently retired from the Department of Agriculture, thinks{{U}} (88) {{/U}}infrared crop scanning could be adopted by the end of the decade, but{{U}} (89) {{/U}}Paley finds the financial backing{{U}} (90) {{/U}}he failed to obtain 10 years ago.

单选题Sometimes artists find it hard for their works to win popular ______.

单选题{{B}}Passage 2{{/B}} {{I}} Then felt like some watcher of the skies When a new planet swims into his ken, Or like stout Cortez, when with eagle eyes He stared at the Pacific--and all his men Looked at each other with a wild surmise-- Silent, upon a peak in Darien.{{/I}} --Keats With these well loved lines John Keats recognized the most important geographical event in all the world, excepting only the feat of the Admiral Columbus himself. It was the discovery by European men of a vast sheet of water covering nearly 40 per cent of the globe--the ocean later to be named Pacific by Ferdinand Magellan because of its seeming tranquility. It is too bad that Keats' beautiful lines erred in naming stout Cortez instead of the equally stout Balboa, a hero of much courage and perseverance. Too bad it was, too, for the immortal Vasco Nunez de Balboa, that communications in his day were so slow and uncertain. Had they been better he might well have avoided losing his head for his pains in bringing renown to Spain and incalculable new knowledge to the civilized world. For lose it be did, under the axe at the insance of a jealous governor.

单选题We always lay in a large ______ of tinned food in winter in case we are snowed up.

单选题Totally perplexed by the first question on the exam, he passed on to the second.

单选题This passage can best be titled as ______.

单选题Distinguished architecture requires the expenditure of large sums of money, even if it is by no means certain ______the expenditure of large sums of money______distinguished architecture.

单选题Christmas shoppers should be aware of the possible Udefects /Uof the products sold at a discount.

单选题Mr. Bridges mentioned briefly several other subjects in the course of his talk but mostly kept himself to the main topic.

单选题Some workers find it hard to ______ themselves to the new working conditions.

单选题She can (hardly) avoid (making) grammatical mistakes in her (composition)(how) hard she tries.