The destruction of habitats (栖息地) all over the world is the primary reason species are becoming extinct (灭绝) or endangered. Hous

admin2019-04-13  11

问题    The destruction of habitats (栖息地) all over the world is the primary reason species are becoming extinct (灭绝) or endangered. Houses, highways, dams, industrial buildings, and ever-spreading farms now dominate【C1】______formerly occupied by forests, deserts, and wetlands. 【C2】______the beginning of European settlement in America, 【C3】______, over 65 , 000, 000 acres of wetlands have been drained. One million acres alone vanished【C4】______1985 and 1995.
   Habitat destruction can be【C5】______or it can be subtle, occurring over a【C6】______period of time without being noticed. 【C7】______such as sewage from cities and chemical runoff fromfarms, can change the【C8】______and quantity of water in streams and rivers. To【C9】______living in a delicately balanced habitat, this disturbance can be as【C10】______as the clear-cutting of a rainforest.
   【C11】______remaining habitats are carved into smaller and smaller pockets or islands, remaining species are forced to exist in these【C12】______areas, which causes further habitat【C13】______. These species become less adaptable to environmental【C14】______ : in fact, they become【C15】______endangered. Scientists believe that when a habitat is cut by 90% , one-half of its plants, animals and insects will become extinct.
【C6】

选项 A、long
B、short
C、happy
D、sad

答案A

解析 前文提到栖息地的破坏是明显的或者是微妙的,即可能很长时间其变化都没有被注意到。a long period表示“很长一段时间”.故选A。
转载请注明原文地址:https://kaotiyun.com/show/deaC777K
本试题收录于: 英语题库成考专升本分类
0

最新回复(0)