The disappearance of the wolves had many unexpected results. Deer and elk(麋鹿) populations — major food sources (来源) for the wolf – grew rapidly. These animals consumed large amounts of vegetation (植被), which reduced plant diversity in the park. In the absence of wolves, coyote populations also grew quickly. The coyotes killed a large percentage of the park’ s red foxes, and completely drove away the park’ s beavers.
As early as 1966,biologists asked the government to consider reintroducing wolves to Yellowstone Park.They hoped that wolves would be able to control the elk and coyote problems.Many farmers opposed the plan because they feared that wolves would kill their farm animals or pets.
The government spent nearly 30 years coming up with a plan to reintroduce the wolvers. The U.S.Fish and Wildlife Service carefully monitors and manages the wolf packs in Yellowstone.Today,the debate continues over how well the gray wolf is fitting in at Yellowstone.Elk,deer,and coyote populations are down,while beavers and red foxes have made a comeback.The Yellowstone wolf project has been a valuable experiment to help biologists decide whether to reintroduce wolves to other parts of the country as well.
28.What is the text mainly about?
A.Wildlife research in the United States.
B.Plant diversity in the Yellowstone area.
C.The conflict between farmers and gray wolves.
【江西宜春市上高二中2017-2018学年高二年级第一次月考英语试卷】相关文章:
★ 河南省中原名校豫南九校2017届高三上学期第四次质量考评英语试卷
★ 广东省肇庆市2016-2017学年高一上学期期末质量检测英语试卷
★ 山东省济宁市任城一中2016-2017学年高一12月质检 英语 Word版含答案
★ 河北省石家庄市第一中学2016-2017学年高一上学期期末考试 英语试题 Word版含答案
★ 河南省周口市中英文学校2017-2017学年高一上学期第三次月考英语试题
★ 山西省应县一中2017-2018学年高二下学期第八次月考英语试卷
★ 江西省宜春市上高二中2016-2017学年高一上学期第三次月考 英语 Word版含答案
★ 浙江省平阳中学2016-2017学年高一12月月考英语试题
★ 山东省济宁市汶上一中2016-2017学年高一上学期期中检测 英语 Word版含答案
★ 黑龙江省青冈县一中2017-2018学年高一下学期月考B卷英语试卷
最新
2019-11-15
2019-11-15
2019-11-14
2019-11-14
2019-11-11
2019-11-11