[外语类试卷]专业英语八级(改错)模拟试卷281及答案与解析.doc
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1、专业英语八级(改错)模拟试卷 281及答案与解析 一、 PART III LANGUAGE USAGE 0 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. Or there are many examples of tool use by【 S1】 _ t
2、he other mammals, as well as by birds and other types of animals.【 S2】 _ Tools are used by many species in the capture or preparation of food. Chimpanzees use sticks and poles to bring up ants and termites【 S3】 _ (白蚁 )from their hiding places. Among the most complex tool use observing in the wild is
3、 the use of stones by Ivory Coast chimpanzees【 S4】 _ to crack nuts open. They select a large flat stone as anvil(a heavy【 S5】 _ 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, but thus often a【 S6】 _ chimpanzee may carry a hau
4、l of nuts more than 40 meters to find a suitable anvil. The use of tools in chimpanzees is especially interesting while these animals sometimes modify tools to make them【 S7】 _ better suited their intended purpose. To make a twig more effective【 S8】 _ for digging out termites, for example, a chimp m
5、ay first strip it of its leaves. Surprisingly, there is also a species of bird that use sticks to【 S9】 _ probe holes in the search for insects. One of the species of Galapagos finch(雀类 ), the woodpecker finch, picks up or breaks off a twig, cactus spine, or leaf stem. This primitive tool is then hel
6、d in their beak and used to probe for insects in holes in trees that【 S10】 _ the bird cannot probe directly with its beak. Birds have been seen to carry twigs from tree to tree searching for prey. 1 【 S1】 2 【 S2】 3 【 S3】 4 【 S4】 5 【 S5】 6 【 S6】 7 【 S7】 8 【 S8】 9 【 S9】 10 【 S10】 10 The last two torna
7、do seasons have been the deadliest in a decade, with 206 deaths. Everyone from the insurance industry to Al Gore worry that global warming may be causing more tornado【 S1】 _ activity. But theres no baseline for comparison. Thats why we have【 S2】 _ no accurate record of tornadoes before the 1950s, ba
8、ck when it was possible for these brief, freakish funnels of air to blow over the unpopulated areas without a notice.【 S3】 _ Tornado warnings have improved over the years; forecasters can now issue warnings about 18 minutes after touchdown for 75【 S4】 _ percent of twisters. As longer-term forecasts,
9、 the science isnt there【 S5】 _ yet, despite that you hear on the nightly news. “ Television【 S6】 _ forecasters cater with the publics curiosity about extreme weather,“【 S7】 _ says Michael H. Glantz, a professor at the University of Colorado at Boulder. Their goal, of course, is to be first with a fo
10、recast of trouble ahead. The number of deaths per tornado is greater in the South than in Tornado Alley(the Great Plains and part of the Midwest) a disparity that cant be explained for storm frequency or severity.【 S8】 _ Experts say things like terrain, population density, and the number of mobile h
11、omes play a role. And the biggest factor might be timing:【 S9】 _ “In the Plains,“ explains Schaefer, “we have a many more clearly【 S10】 _ defined period of tornado activity, generally from March to late June. In the Southeast, tornadoes can happen all year long, so there may be less vigilance. “ Res
12、earch also shows that the South may have a climatological propensity(倾向 )for nighttime storms, which catch people unawares asleep in bed. Last years two killer tornado outbreaks in North Carolina landed between 11: 30 p. m. and 3: 30 a. m. 11 【 S1】 12 【 S2】 13 【 S3】 14 【 S4】 15 【 S5】 16 【 S6】 17 【 S
13、7】 18 【 S8】 19 【 S9】 20 【 S10】 20 A customized, constantly-updating newspaper used to be the stuff of science fiction. Now, thanks to tablet devices, there are several. Accordingly, the corporate giants aim to cash with on the desperation of 【 S1】 _ traditional news publishers. A study last month fo
14、und that, less than two years after the iPad went on sale, 11% of American adults now own a tablet and more than half of this group read news on them each day. They 【 S2】 _ are more avidly news consumers than those without tablets, and for long 【 S3】 _ articles they prefer their tablets both to ordi
15、nary computers and to print. For news outlets facing dwindling print circulations and meagre online advertising rates, this is glimmer of hope. Yet turning this 【 S4】 _ readership into avenue is tricky. Not all publishers can afford to build 【 S5】 _ their own tablet apps. For those that can, readers
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