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
2016-06-24
26
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 tothe tree trunks had more gold than those growing on the ends of thebranches.”(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/qIVd777K
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
Whoarethetwospeakersintheconversation?
Whatisthemaninterestedinatthebeginningoftheconversation?
Writeacompositionofabout120wordson"ShouldPrivateCarsbeEncouragedinChina".Youmayrefertothefollowingpoints:
Readthefollowingparagraphsinwhichfivepeopletalkabouthightechnology.Forquestions61to65,matchthenameofeachsp
Ifyouliveinalargecity,youarequitefamiliarwithsomeoftheproblemsofnoise,but,becauseofsomeofitsharmfuleff
Mostmothershaveagoodpieceofadvice:Nevergointoasupermarkethungry!Ifyougoshoppingforfoodbeforelunchtime,you’
Anelderlycarpenterwasreadytoretire.Hetoldhisemployerofhisplansto【C1】______thehouse-buildingbusinesstoliveamo
Anelderlycarpenterwasreadytoretire.Hetoldhisemployerofhisplansto【C1】______thehouse-buildingbusinesstoliveamo
Whataretheguests’comments?
Whataretheguests’comments?
随机试题
温病后期,夜热早凉,热退无汗,舌红少苔,脉细数者,治宜选用
与SE序列相比,FSE或TSE序列的主要优点在于
A.硝酸银 B.碘液 C.苯扎溴胺 D.乙醇 E.高锰酸钾卤素及其化合物消毒剂包括
阿托品的基本药理作用有()。
(2006)关于势函数和流函数,下面哪一种说法是错的?()
2017年1月10日,甲公司取得政府作为股东投入的一宗土地使用权及地上建筑物。取得时,土地使用权的公允价值为5600万元,地上建筑物的公允价值为3000万元。上述土地使用权及地上建筑物供管理部门办公使用,预计使用年限均为50年,固定资产采用年限平均法计提折
材料一:唯物主义认为世界的本质是物质,世界上先有物质后有意识,物质决定意识,意识是物质的反映(物质第一性,意识第二性)。战国时期荀子认为:“天地合而万物生,阴阳接而变化起。”东汉时期王充认为:“天地合气,万物自生。”南朝时期范缜认为:“形存则神存,形
旗开得胜:马到成功
AfterJackson(wait)______foranhour,hereachedtheconclusionthatMr.Smithwasnotcoming.
Whatisnotnecessaryforother’shelp?Excessive______.
最新回复
(
0
)