扫描二维码，直接登录
题库 / Prep2008E2-SC-223
Humans have been damaging the environment for centuries by overcutting trees and farming too intensively, and though some protective measures, like the establishment of national forests and wildlife sanctuaries, having been taken decades ago, great increases in population and in the intensity of industrialization are causing a worldwide ecological crisis.
though some protective measures, like the establishment of national forests and wildlife sanctuaries, having been taken decades ago, great increases in population
though some protective measures, such as the establishment of national forests and wildlife sanctuaries, were taken decades ago, great increases in population
though some protective measures, such as establishing national forests and wildlife sanctuaries having been taken decades ago, great population increases
with some protective measures, like establishing national forests and wildlife sanctuaries that were taken decades ago, great increases in population
with some protective measures, such as the establishment of national forests and wildlife sanctuaries, having been taken decades ago, great population increases
though+完整句子，主句 kick off A/C
’great population increases' akward 表达 后面 and in the intensity of industrialization 缺少great->C/E
context 语义上 C 即使保护设施已经存在很久， 人口增长& 工业化增长... make sense
E with some protective measures介词短语 做状语/定语 akward
登录 或 注册 后可以参加讨论