2021年宁夏GRE考试真题卷(6).docx
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1、2021年宁夏GRE考试真题卷(6)本卷共分为2大题50小题,作答时间为180分钟,总分100分,60分及格。一、单项选择题(共25题,每题2分。每题的备选项中,只有一个最符合题意) 1.Earthshine-the faint light that allows us to see the dark side of the moon when the moon is a thin crescent-is sunlight reflected from the earth to the moon, then back again. Earthshine is variable because
2、the earths reflectivity changes as large cloud masses come and go. The moon with its earthshine acts as a crude weather satellite by reporting, in a very simple way, the general state of terrestrial cloudiness. Because the amount of light reflected from the earth depends on the amount of cloud cover
3、, the brightness of the dark side of the moon varies. As the phase of the moon progresses beyond a thin crescent, earthshine fades in a day or two. This is because the amount of sunlit earth available to make earthshine diminishes as the moon orbits the earth. Also, there is the increasing glare of
4、the moons growing crescent, which causes a loss of visibility by irradiation.The word crude in paragraph 1 is closest in meaning toAfalseBstormyCrandomDsimple 2.The evolutionary origins of music are wrapped in mystery. There is ample concrete evidence of musical instruments dating back to the Stone
5、Age and much presumptive evidence about the role of music in organizing work groups, hunting parties, and religious rites. Many scholars suspect that musical and linguistic expression had common origins but then split off from one another several hundred thousand years ago. 4. The phrase split off i
6、n the passage is closest in meaning toAseparatedBborrowedCevolvedDlearned 3.1 The dominant feature on the map of Canada is the two-million-square-mile mass of ancient rock known as the Canadian Shield. The shield sweeps in a great arc around Hudson Bay from far northwest to far northeast, touching t
7、he Great Lakes on the south and extending eastward deep into Quebec. The rock of the shield consists mainly of granite and gneiss formed nearly four billion years ago. During the ice ages, huge glaciers advanced and retreated over the region, scouring the surface, removing most of the existing soil,
8、 and hollowing out countless lakes. 2 Clay soils exist in a few areas on the shields southern edge, but attempts to bring them into agricultural use have been largely unsuccessful. However, the regions mineral wealth has sustained both temporary and permanent settlements during the past century, and
9、 more recently, some of its vast potential for hydroelectric power has been tapped.The word scouring in paragraph 1 is closest in meaning toAfreezingBupliftingCimprovingDscraping 4.1 There is growing evidence that urbanization has a sharp impact on climate, causing changes that can wreak havoc on pr
10、ecipitation patterns that supply the precious resource of water. The heavy amounts of heat and pollution rising from cities both delay and stimulate the fall of precipitation, depriving some areas of rain while drenching others. 2 Cities are on average one to ten degrees warmer than surrounding unde
11、veloped areas. Cities also produce large amounts of pollutants called aerosols, gaseous suspensions of dust particles or byproducts from the burning of fossil fuels. Both heat and aerosols change the dynamics of clouds. When hoisted up in the sky, the microscopic particles act as multiple surfaces o
12、n which the moisture in clouds can condense as tiny droplets. This can prevent or delay the formation of larger raindrops that fall more easily from the sky, or it can cause the rain to fall in another location. 3 In California, pollution blows eastward and causes a precipitation shortage of around
13、one trillion gallons a year across the Sierra Nevada mountain range. By contrast, in very humid cities, such as Houston, heat and pollutants seem to invigorate summer storm activity by allowing clouds to build higher and fuller before releasing torrential rains.The phrase wreak havoc on in paragraph
14、 1 meansAisruptBomitCstrengthenDseparate 5.It is a popular notion that autumn leaves are tinted by freezing temperatures. In truth, the foliage is dulled, not colored, by frost. Red leaves such as maples are brightest when sunny days are followed by cool-but not freezing-nights. Under such condition
15、s, sun- made sugars are trapped in the leaves, where they form the red pigment anthocyanin. Leaves that appear yellow in autumn are no less yellow in spring and summer. However, in spring and summer the yellow pigments-carotenoid and xanthophyll-are masked by the green pigment chlorophyll, which bre
16、aks down with the diminishing sunlight of fall.The word masked in the passage is closest in meaning toAcreatedBcoloredCcapturedDconcealed 6.1 A growing number of companies are finding that small-group discussions allow them to develop healthier ways to think about work. People at all levels of the c
17、orporate structure are starting groups that meet weekly or monthly to talk over ways to make workplaces more ethical and just. 2 Several factors must be present for small-group discussions to be successful. First, it is important to put together the right group. Groups work best when they consist of
18、 people who have similar duties, responsibilities, and missions. This does not mean, however, that everyone in the group must think in lockstep. 3 All participants should agree on the groups purpose. Finding the right subject matter is essential. There are several ways to fuel the discussion: by usi
19、ng the companys mission statement, by finding readings on work and ethics by experts in the topic, or by analyzing specific workplace incidents that have affected the company or others like it. 4 Finally, the dynamics of the group should be balanced, and the discussion leader must not be allowed to
20、overwhelm the conversation or the agenda. Groups work best when the same person is not always in charge. It is better to rotate the leadership for each meeting and let that leader choose the material for discussion.The phrase talk over in paragraph 1 is closest in meaning toAdemandBoverlookCexploreD
21、remove 7.1 Cool has withstood the fleeting nature of most slang. As a modifier, as a noun, and as a verb, cool has been around a long time. Shakespeare used cool as a verb, and the word later evolved into other parts of speech. It has been used as an adjective since 1728 to describe large sums of mo
22、ney, as in worth a cool ten million. 2 Cool, meaning excellent or first-rate, was popularized in jazz circles, and jazz musicians and jazz lovers still refer to great works as cool. As long as Miles Daviss classic 1957 album, Birth of the Cool, remains one of the best-selling jazz recordings of all
23、time, cool will stay cool-it will carry the same weight as it did more than 50 years ago. One reason for the endurance of cool is that its meaning continues to evolve. While it meant wow! two decades ago, today it is more often used to mean, Thats OK with me, as in Im cool with that.The word fleetin
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