首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
考研
A river’s colors hold clues to what flows in its water, from soft-green algae to yellow-brown mud. Human eyes might miss【B1】__
A river’s colors hold clues to what flows in its water, from soft-green algae to yellow-brown mud. Human eyes might miss【B1】__
admin
2022-02-15
40
问题
A river’s colors hold clues to what flows in its water, from soft-green algae to yellow-brown mud. Human eyes might miss【B1】________shifts in these shadings, but satellites can【B2】________them—and researchers can use them to track large-scale changes and【B3】________spot【B4】________of trouble.
A team led by University of Pittsburgh environmental scientist John R. Gardner analyzed 234,727 satellite images,【B5】________67,000 miles of U. S. rivers over 35 years. The researchers isolated the main light wavelength each river reflected,【B6】________ shifting colors into grids of numbers.
Gardner’s group found sediment-laden yellow (56 percent) and algal green (38 percent)【B7】________the country’s rivers. A third of them had changed color over the past few decades,【B8】________the fastest shifts often near sediment-trapping dams. This effect is clear and【B9】________
Western U.S. river colors【B10】________moved toward the blue end of the spectrum over time, suggesting they carried【B11】________sand and silt. But many rivers in the Northeast showed a "red shift" that made them appear more yellow, indicating lower water levels or【B12】________sediment. Gardner says this【B13】________suggests that regional factors, such as land-use patterns and watershed-management【B14】________, influence long-term river hue shifts.
"We also found very distinct【B15】________patterns," Gardner says. Many of the nation’s rivers turn yellower in spring or summer【B16】________peaking rainfall muddies the waters.【B17】________the timing also【B18】________geography and human activity such as【B19】________
Using satellites to gauge changes in river composition could warn scientists when environments begin to【B20】________balance, the researchers say.
【B5】
选项
A、covering
B、ranging
C、scoping
D、including
答案
[A]
解析
本题考查动词辨析。四个选项分别为[A]covering“覆盖”;[B]ranging“(在一定的范围内)变化,变动;包括(从……到……)之间的各类事物”;[C]scoping“仔细看,彻底检查”;[D]including“包括”。根据该句话的意思并结合所给单词选项,cover意为“覆盖”,符合句意。故选项[A]正确。
转载请注明原文地址:https://kaotiyun.com/show/HnmZ777K
0
考研英语一
相关试题推荐
Muchoftheworldshouldgoonadietin2014.Morethanathirdofadults【C1】______wereestimatedtobe【C2】______orobesein20
Muchoftheworldshouldgoonadietin2014.Morethanathirdofadults【C1】______wereestimatedtobe【C2】______orobesein20
Muchoftheworldshouldgoonadietin2014.Morethanathirdofadults【C1】______wereestimatedtobe【C2】______orobesein20
Muchoftheworldshouldgoonadietin2014.Morethanathirdofadults【C1】______wereestimatedtobe【C2】______orobesein20
Muchoftheworldshouldgoonadietin2014.Morethanathirdofadults【C1】______wereestimatedtobe【C2】______orobesein20
Muchoftheworldshouldgoonadietin2014.Morethanathirdofadults【C1】______wereestimatedtobe【C2】______orobesein20
Ariver’scolorsholdcluestowhatflowsinitswater,fromsoft-greenalgaetoyellow-brownmud.Humaneyesmightmiss【B1】__
Ariver’scolorsholdcluestowhatflowsinitswater,fromsoft-greenalgaetoyellow-brownmud.Humaneyesmightmiss【B1】__
Ariver’scolorsholdcluestowhatflowsinitswater,fromsoft-greenalgaetoyellow-brownmud.Humaneyesmightmiss【B1】__
随机试题
泰罗认为军事型组织有两个缺陷:第一,它要求过多的来自最高层的________;第二,对________期望太多,其结果是有效地排斥了管理层对工人的直接控制。
特别重大事故、重大事故逐级上报至()和负有安全生产监督管理职责的有关部门。
简述石灰的特性。
当归的主治病证是()熟地黄的主治病证是()
对于产妇因合并心脏病而不宜再妊娠者应建议其()
保证银行稳健经营、安全运行的核心指标是()。
1989年,首次提出“情景性学习”的概念的是()。
中国革命胜利的原因有
Salesperson:CanIhelpyou,sir?Customer:Yes,IboughtthiswatchfromyoulastweekandI’vebeenhavingafewproblemswith
InthebattlefortheyoungsodadrinkersofChina,U.S.-basedPepsi-Colamayhavefoundapowerfulnewweapon:youngstreetsel
最新回复
(
0
)