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
外语
Flying over a desert area in an airplane, two scientists looked down with trained eyes at trees and bushes. After an hour’ s fli
Flying over a desert area in an airplane, two scientists looked down with trained eyes at trees and bushes. After an hour’ s fli
admin
2019-01-10
68
问题
Flying over a desert area in an airplane, two scientists looked down with trained eyes at trees and bushes. After an hour’ s flight, one of the scientists wrote in his book, "Look here for probable metal. " Scientists in another airplane, flying over a mountain area, sent a message to other scientists on the ground, "Gold possible. " Walking across hilly ground, four scientists reported, "This ground should be searched for metal. " From an airplane over a hilly wasteland a scientist sent back by radio one word: " Uranium. "
None of the scientists had X-ray eyes: they had no magic power of looking down below the earth’ s surface. They were merely putting to use one of the newest methods of locating minerals in the ground.. . trees and plants as signs that certain minerals may lie beneath the ground on which the trees and plants are growing.
This newest method of searching for minerals is based on the fact that minerals deep in the earth may affect the kind of bushes and trees that grow in the surface.
At Watson Bar Greek, a brook(小溪)six thousand feet high in the mountains of British Columbia, Canada, a mineral search group gathered bags of tree seeds. Boxes were filled with small branches from the trees. Roots were dug and put into boxes. Each bag and box was carefully marked. In a scientific laboratory, the parts of the forest trees were burned to ashes and tested. Each small part was examined to learn whether there were minerals in it.
Study of the roots, branches, and seeds showed no silver. But there were small amounts of gold in the roots and a little less gold in the branches and seeds. The seeds growing nearest to the tree trunks had more gold than those growing on the ends of the branches.
The study of trees, branches and roots shows that______.
选项
A、there were larger amounts of gold in the branches than in the seeds
B、there were smaller amounts of gold in the roots than in the branches
C、there were less amounts of gold in the seeds growing on the ends of branches than seeds growing nearest to the tree trunks
D、there was more gold in the branches than in the roots
答案
C
解析
细节题。从文中最后一句“The seeds growing nearest to the tree trunks had more gold than those growing on the ends of the branches.”(长在最接近树干上的种子比长在树枝根部的种子要含有更多的金元素)可知答案。故本题选择C。
转载请注明原文地址:https://kaotiyun.com/show/cOVd777K
本试题收录于:
公共英语三级笔试题库公共英语(PETS)分类
0
公共英语三级笔试
公共英语(PETS)
相关试题推荐
Inthe1950’s,accumulatingscientificevidence【C1】______cigarettesmokingandlungcancermadea【C2】______impact【C3】______thes
Inthe1950’s,accumulatingscientificevidence【C1】______cigarettesmokingandlungcancermadea【C2】______impact【C3】______thes
What’stheairportlike?
Hardlyaweekgoesbywithoutsomeadvanceintechnologythatwouldhaveseemedincredible50yearsago.Andwecanexpectther
Increasingly,overthepasttenyears,people—especiallyyoungpeople—havebecomeawareoftheneedtochangetheireatinghabit
AftertheviolentearthquakethatshookLosAngelesin1994,earthquakescientistshadgoodnewstoreport:Thedamageanddeath
Everyobjecttellsastory.Eventhemostordinaryobjectscanpresentuswithpowerfulimages.Sometimesitistheordinarynat
GregLouganis:Thesewerethetrialsforthe1988OlympicsinSeoul,Korea.Untilthisdive,Ihadbeenahead.Butnow,some
AnembarrassingexperienceItwasthesmallhoursofthemorningwhenwereachedLondonAirport.IhadcabledLondonfromAm
GregLouganis:Thesewerethetrialsforthe1988OlympicsinSeoul,Korea.Untilthisdive,Ihadbeenahead.Butnow,some
随机试题
【2010年真题】在投资项目经济评价的不确定性分析中,敏感性分析的主要目的是()。
深基坑土方开挖的顺序、方法必须与( )相一致。
有报警线的预制保温管,安装()应测试报警线的通断状况和电阻值,并做好记录。
依据产生风险的行为分类,地震、洪水、海啸、经济衰退等属于( )。
【2017年下】某地区教育行政部门未经公开招标,直接将当地两所较为薄弱的公办学校移交给一家民办教育集团承办,并规定对该校所有学生按市场价格收费。该地区教育行政部门的做法()。
父权制确立的标志是()。
对英国教育发展具有重要影响,第一次从国家角度阐明使中等教育成为面向全体儿童的教育的思想的法案是()
A、 B、 C、 D、 C
实践和认识的关系是
执行下列语句段后,输出字符"*"的个数是()。for(inti=50;i>1;i-=2)cout
最新回复
(
0
)