Passage 2
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.“The ground should be searched for metal.”From an airplane over a hilly wasteland a scientist sent there by radio one word:“Uranium.” None of the scientists had X ray eyes:they had on magic powers 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,using trees and plants as signs that certain minerals may lie beneath the ground on which trees and plants are growing. This newest method of searchng for minerals is based on the fact that minerals deep in the
A. gold
B. silver
C. metal
D. minerals
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 mineral
A. Scientists Searching for Metals with Special Power
B. New Methods of Searching for Minerals
C. Gold Could Be Found by Trees and Plants
D. A New Method of Searching for Minerals—Using Trees and Plants
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