单选题
公共英语三级
2011-08-17
The scientists were searching for minerals by using
A. X-ray
B. magic power
C. a special instrument
D. trained eyes
参考答案
D
答案解析
细节题。从文章第一段的第一句“taro scientists looked down with trained eyes at trees and bushes”(两位科学家用受过训练的眼睛观察树木和灌木)可知答案。故本题选择D。


