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
32
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
OurculturehascausedmostAmericanstoassumenotonlythatourlanguageisuniversalbutthatthegesturesweuseareunderst
OurculturehascausedmostAmericanstoassumenotonlythatourlanguageisuniversalbutthatthegesturesweuseareunderst
Thepredictabilityofourmortalityratesissomethingthathaslongpuzzledsocialscientists.Afterall,thereisnonaturalr
AftertheviolentearthquakethatshookLosAngelesin1994,earthquakescientistshadgoodnewstoreport:Thedamageanddeath
Whataretheman’shobbies?
Whataretheman’shobbies?
What’stheairportlike?
GregLouganis:Thesewerethetrialsforthe1988OlympicsinSeoul,Korea.Untilthisdive,Ihadbeenahead.Butnow,some
随机试题
胆固醇结石多见于
患者男性,20岁,受凉后双下肢出现片状红疹,色鲜红,界限清楚,压之褪色,解除压力红色很快恢复。最可能的诊断是
涎腺腺样囊性癌筛孔状结构形成的机制是
原发性肺脓肿最常见的病原菌是
腹部手术后患者拔出胃管的适宜时间为()
下列关于债券提前偿还的说法中,正确的有()。
根据公司法律制度的规定,有限责任公司的股东转让股权后,公司无须办理的事项是()。
使用远程登录telnet对交换机进行配置时,可以利用网上的任意一台计算机,以()的方式远程登录到交换机上实现。
Conventionalwisdomhaslongheldthatmammalsstayedmillionsofyearsonearth.Aslongasdinosaursroamedthelands,ourdis
Fewpeoplewouldeverthinkofbeginninganewjobwhentheyareold,butAnnadiditattheageof76.Shewas【T1】______inapo
最新回复
(
0
)