Flying over a desert area in an airplane, two scientists looked down with trained eyes at trees and bushes. After an hours 11 one of the scientists wrote in his book, Look here for 12 metal. Scientists in another airplane, flying over a mountain region, sent a 13 to other scientists on the ground, Gold possible. Walking across hilly ground, four scientists reported, This ground should be searched for metals. 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 14 powers for looking down below the earths surface. They were 15 putting to use one of the newest methods of 16 minerals in the groundusing trees and plants as 17 that certain minerals may lie beneath the ground on which the trees and plants are growing.
This newest method of searching for minerals is 18 on the fact that minerals deep in the earth may 19 the kind of bushes and trees that grow on the surface.
At Watson Bar Creek, a brook 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 20 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.
A. signs B. sufficiently C. locating D. affect
E. merely F. magic G. hints H. carefully
I. finding J. message K. flight L. probable
M. revealing N. based O. information
答案:11. K 12. L 13. J 14. F 15. E 16. C 17. A 18. N 19. D 20. H
Body blow? 重击
国内英语资讯:Water exceeds guaranteed level at freshwater lake
我国三年将投资约1.29万亿元推进150项重大水利工程建设
网上学习 Online Learning
The Big Potential Market 巨大的潜在市场
国内英语资讯:China issues statement to promote maritime development
国内英语资讯:Chinese vice premier stresses stabilizing foreign trade, investment
国内英语资讯:China allocates 309 mln yuan for disaster relief amid floods
国内英语资讯:China raises flood response to second-highest level
真是倾盆大雨呀!
国内英语资讯:Xi Focus: Xi stresses braving challenges in fighting floods to ensure safety of peoples li
Christmas Day 圣诞节
研究:新冠病毒抗体可能在数月内消失
The Globalization of Tennis 网球的全球化
Sharapova Got the Match Ban 莎拉波娃被禁赛
国内英语资讯:China refutes U.S. accusations over South China Sea military exercises
The Right to Make Up 化妆的权利
国内英语资讯:Top political advisor stresses measures to help left-behind children, elderly
国内英语资讯:Shanghai designates downtown open road for self-driving vehicles testing
The Big Apple 大苹果
国内英语资讯:Chinese state councilor proposes three suggestions on bringing China-U.S. relations back to
我的收获 My Harvest
Saving Literary Film 拯救文艺片
国内英语资讯:China-Mexico relations maintain sound momentum of development: Chinese vice FM
国内英语资讯:China refutes U.S. unwarranted comments on its cooperation with WHO
体坛英语资讯:After five months on hold, CBA is back on track
国内英语资讯:Chinese vice premier stresses investment in agriculture
国内英语资讯:China spreads reforms tested by pilot FTZs nationwide
国内英语资讯:Xi Focus-Quotable Quotes: Xi Jinping on protecting and utilizing the ocean
谭德塞:新冠病毒仍是头号公敌 太多国家正朝着错误的方向前进