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
50
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.
【B15】
选项
A、yearly
B、monthly
C、timely
D、seasonal
答案
[D]
解析
本题考查形容词辨析。四个选项分别为[A]yearly“每年的,一年一次的”;[B]monthly“每月的,每月一次的”;[C]timely“及时的”;[D]seasonal“季节的,随季节变化的”。根据后文,春季或夏季,由于暴雨使河水浑浊,许多河流都会变黄。因此表明加德纳研究小组发现了非常明显的季节模式。故选项[D]正确。
转载请注明原文地址:https://kaotiyun.com/show/2nmZ777K
0
考研英语一
相关试题推荐
Hewaspunished______heshouldmakethesamemistakeagain.
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
晶体管替换的基本方法是什么?
上海证券交易所成立于_____________。
诊断自主性功能亢进性甲状腺腺瘤最佳的甲状腺检查是
非特异性酯酶(+),不被氟化钠(NaF)抑制见于
男,38岁。左膝外上方逐渐隆起性包块半年。X射线平片示左股骨下端外侧囊性破坏,边缘膨胀,中央肥皂泡样改变,无明显骨膜反应。对于该患者,不恰当的治疗方法是
某国有企业国际招标采购进口楼宇自控系统,采用综合评价法评标,规定投标人的评标价等于评标基准价的得满分,则评标基准价应是()。[2010年真题]
根据资金来源和性质不同,资金申请报告主要有()。
中国证券登记结算有限责任公司按照中国人民银行规定的()向结算参与人计付结算备付金利息。
A公司为国有控股公司,适用的所得税税率为25%,预计在未来期间不会发生变化。2008年1月1日首次执行新会计准则。2008年1月1日经董事会和股东大会批准,于2008年1月1日开始对有关会计政策和会计估计作如下变更:(1)管理用固定资产的预计使用
将考生文件夹下DSK文件夹中的文件BRAND.BPF删除。
最新回复
(
0
)