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
31
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
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
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
已知学生关系:学生(学号,姓名,年龄,住址)。若有SQL查询语句“SELECT姓名,年龄FROM学生WHERE住址=江苏”,则该语句对学生关系进行了____________操作。
A、外感时邪,引动伏痰B、感受风邪,肺气失宣C、外感时邪,肺气上逆D、禀赋不足,胎毒内蕴E、肺脾气虚,痰浊阻肺百日咳的主要病因病机是
关于宪法效力的说法,下列选项正确的是:(2014年卷一94题,不定项)
债券质押式回购交易中,无论是资金融人方还是资金融出方都要经过两次交易契约行为。()
《霓裳羽衣》舞蹈的首演者和最擅长者是()。
【背景材料】8月30日,宜宾市第三中学的军训会操典礼上,一位独腿少年,拄着拐棍站在高一二十九班队伍的排头,显得格外醒目。他叫罗港,2000年的一场车祸让年仅3岁的他左下肢粉碎性骨折,被迫截肢,在接下来的生活中,拐杖成为了他必不可缺的东西。然而,坚
A县农民李某因犯盗窃罪被法院判处有期徒刑1年,刑满释放后,想在甲市B县开办一家饭店,各项准备工作就绪后,当他向B县工商局申请营业执照时,B县工商局认为此人过去有劣迹,虽然刑满释放,尚需要继续教育,故拒绝向其颁发营业执照。李某不服,欲向人民法院提起行政诉讼。
《神灭论》
在关系代数运算中,(65)运算结果的关系模式与原关系模式相同。
IhaveneverseenMrs.Clarkbefore,butIknowfromhermedicalchartandthereportIreceivedfromtheprecedingshiftthatt
最新回复
(
0
)