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
32
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.
【B19】
选项
A、agriculture
B、ecology
C、architecture
D、environment
答案
[A]
解析
agriculture本题考查名词辨析。四个选项分别为[A]agriculture“农业”;[B]ecology“生态学”;[C]architecture“建筑学,建筑风格”;[D]environment“环境”。空格1 9处内容为举例说明,所修饰的内容是human activity,结合所给单词选项,agriculture代入句中符合句意。故选项[A]正确。
转载请注明原文地址:https://kaotiyun.com/show/BnmZ777K
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
用光学分度头逐次测量外花键各键同一侧,可测出z个差值,在z个差值中,最大差值为__________。
Drinkingeightfullglassesofwateradaymaydolittlemorethanmakeapersonruntothebathroom,aresearchersaid.New
A.中心静脉压降低,肺毛细血管楔嵌压降低,血压降低的可能原因及治疗建议B.中心静脉压正常,肺毛细血管楔嵌压增高,血压略降低的可能原因及治疗建议C.中心静脉压正常,肺毛细血管楔嵌压显著增高,血压降低的可能原因及治疗建议D.中心静脉压增高,肺毛细血管楔嵌
患者女性,2岁,发现胸骨左缘第二肋间左锁骨下方连续性机器样杂音伴震颤。最可能的诊断患者女性,8岁,近2年反复发热,胸骨左缘收缩期杂音,胸部X线片肺血增多,肺门血管影搏动明显,肺动脉段凸起,左右心室增大。最可能的诊断
机体阴液突然大量丢失,导致生命危的病理变化是
A、前列腺肥大、尿潴留B、手术后腹胀气C、青光眼D、支气管哮喘E、以上均不可氨甲酰甲胆碱可用于治疗
客户开立用途为日常转账结算和现金收付的账户名称是()。
对于房地产投资项目来说,现金流入通常包括()。
新月派
Thequalityofuniversitylifeisdecliningunderstrainfromthehighereducation,leadingindependentschoolsinBritain【S1】__
最新回复
(
0
)