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
33
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.
【B13】
选项
A、divergence
B、similarity
C、connection
D、assimilation
答案
[A]
解析
本题考查名词辨析。四个选项分别为[A]divergence“差异,分歧”;[B]similarity“类似,相似点”;[C]connection“连接,关系”;[D]assimilation“吸收,同化”。根据上文,美国西部河流的颜色和东北地区的许多河流颜色出现了不一样的变化,这些变化和差异表明了地区因素对河流色调长期变化的影响。故选项[A]正确。
转载请注明原文地址:https://kaotiyun.com/show/mnmZ777K
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
Ariver’scolorsholdcluestowhatflowsinitswater,fromsoft-greenalgaetoyellow-brownmud.Humaneyesmightmiss【B1】__
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
下列哪组药物全部属于AT1受体拮抗药:
AMI的早期标志物是
外用膏剂中的软膏与膏药在中国应用甚早。在《黄帝内经》(素问)“痈疽篇”中已有“疏砭之,涂以豕膏”的记载。汉代名医华佗在施用外科手术后,常习用“神膏”以促进伤口愈合。现代研究显示,外用膏剂可经皮给药而产生局部或全身治疗作用。关于外用膏剂叙述错误的是
主某,住所地为A地;李某,住所地为B地;现二人因贪污被判处刑罚,依次分别监禁于C地和D地。2015年5月,主某拟向人民法院提起诉讼,要求李某偿还欠款18万元。下列人民法院中,有权管辖本案的是()。
我国古代首次设立的中央教育行政机构是()
马克思说:“人的思维是否具有对象的真理性,这并不是一个理论的问题,而是一个实践的问题。人应该在实践中证明自己思维的真理性,即自己思维的现实性和力量,亦即自己思维的此岸性。”这句话所体现的哲学内涵是
下列关于栈的描述正确的是
将考生文件夹下QNE文件夹中的PHEA.FF文件复制到考生文件夹下的XDM文件夹中,文件名为AHF.NA。
Dollytheclone(克隆羊多利)wasbornalamb,butherchromosomes(染色体)telladifferenstory.Theysayshewasalreadyafewyearso
A、Thetextsaretherevealingofthetexters’characters.B、Thetextsarewellwrittenbythetexters.C、Thetextsareunaccepta
最新回复
(
0
)