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
46
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.
【B14】
选项
A、conventions
B、efforts
C、practices
D、drills
答案
[C]
解析
本题考查名词辨析。四个选项分别为[A]conventions“习俗,常规,惯例”;[B]efforts“努力”;[C]practices“实践”;[D]drills“练习,训练”。land-use patterns和watershed-management(14)________为并列成分,watershed-management practices意为“流域管理实践”。故选项[C]正确。
转载请注明原文地址:https://kaotiyun.com/show/1nmZ777K
0
考研英语一
相关试题推荐
Thestudentsaidtherewereafewpointsintheessayhe______impossibletocomprehend.
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】__
Ariver’scolorsholdcluestowhatflowsinitswater,fromsoft-greenalgaetoyellow-brownmud.Humaneyesmightmiss【B1】__
随机试题
A.N胆碱受体激动药B.M受体阻断药C.抗胆碱酯酶药D.α受体阻断药E.胆碱酯酶复活药根据药理作用,新斯的明属于
下列关于糖尿病的分型,正确的是
患者,男,48岁。腰部隐隐作痛已1年有余,伴有腰腿酸软乏力,神疲,伴有滑精,脉细。针灸时选()
患者,女性,68岁。患慢性肺心病6年,今日咳嗽咳痰加重,发绀明显,给予半坐位的主要目的是
经济总量平衡是指()的平衡与协调。
关于冬期施工冻土回填的说法,正确的有()。
导致不确定性的原因很多,主要包括( )。
与民生休戚相关的公用事业价格,有地方政府部门的身影在其中。从打造公信政府的目标出发,地方政府部门没有必要面对民众的质疑与不满而为企业背书,相反,需要力推公用企事业单位的成本公开透明,_______________。就供暖而言,需要在成本透明的基础上,建立煤
旅客可以携带乘车的物品是()。
在农业生产中,只要不超过合适的限度,肥料施得多,农作物的产量就上升;肥料施得少,农作物的产量就下降。由此可知、施肥量与农作物的产量有着密切的关系。以下哪项使用的逻辑方法与题干最为类似?()
最新回复
(
0
)