ecological adj.生态学的 barometer n.气压计
forestry n.林业 gauge v.测定,测量
antsy adj.坐立不安的 ecosystem n.生态系统
populate v.居住 deforest v.采伐树林,清除树林
recolonize v.再度移民到 sift v.详审
scarcity n.缺乏,不足
注释：
1. industries：行业
2. for decades：有几十年。for后接复数的时间词是常用结构,如for days,for years等。本文第四段还会出现for years。
3. “That’s the great thing about ants.”：great thing指前一句的ants are so common throughout the region。
4. tree harvesting：伐林
练习：
A This allowed scientists to gauge the pace and progress of the ecological recovery.
B Yet in other businesses, such as farming and property development, ant surveys aren’t used widely.
C Employing those people are expensive.
D They do this by sorting the ants, counting their numbers and comparing the results with those of earlier surveys.
E The evolution of ant species may have a strong impact on our ecosystem.
F Others will die out for lack of food.
答案：1.F 2.D 3.A 4.B 5.C
