首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
The study was carried out by scientists from ______ .
The study was carried out by scientists from ______ .
admin
2010-02-07
85
问题
The study was carried out by scientists from ______ .
Canadian and American scientists studied the effects of people’ s fishing for sharks in the Northwest Atlantic over the past thirty-five years. Results of their studies were published in Science magazine.
The scientists say one effect of shark fishing has been an estimated ninety-nine percent de-crease in some shark populations. They say the loss of larger sharks has caused a population explosion among fish like skates and rays. Such fish and smaller sharks have increased in number along the east coast of the United States.
Sharks usually eat skates and rays. The scientists say these fish feed on shellfish, which are disappearing from the ocean. They say other sea animals are also being threatened by the area’ s changing environment.
Demand for shark fins has been rising in Asia. Shark fins are used for medical purposes and also for food.
For one of the studies, scientists from Canada examined information from private fishing companies and other research projects. They noted a sharp decrease in eleven kinds of great sharks since the nineteen eighties.
One of the scientists was Julia Baum of Dalhousie University. She says the World Conservation Union earlier this year listed great hammerhead and scalloped hammerhead sharks as being in danger of disappearing. The group also reported the dusky and sandbar sharks as being threatened.
选项
A、America and Australia
B、America and Canada
C、America and Austria
D、America and China
答案
B
解析
转载请注明原文地址:https://www.kaotiyun.com/show/AePd777K
本试题收录于:
公共英语四级笔试题库公共英语(PETS)分类
0
公共英语四级笔试
公共英语(PETS)
相关试题推荐
Oursocialdevelopmentwasencouragedthroughteamwork.Weworkedingroupswithpeoplewe’dnevermet【1】.Welearnttolistent
Oursocialdevelopmentwasencouragedthroughteamwork.Weworkedingroupswithpeoplewe’dnevermet【1】.Welearnttolistent
Oursocialdevelopmentwasencouragedthroughteamwork.Weworkedingroupswithpeoplewe’dnevermet【1】.Welearnttolistent
Oursocialdevelopmentwasencouragedthroughteamwork.Weworkedingroupswithpeoplewe’dnevermet【1】.Welearnttolistent
Inathree-monthperiodlastyear,twoBrooklyniteshadtobecutoutoftheirapartmentsandcarriedtohospitalonstretchers
Forthefirsttime,scientistshaveprofiledspecificgeneticchangesduringtheagingofexperimentalanimals,adiscoverythat
Forthefirsttime,scientistshaveprofiledspecificgeneticchangesduringtheagingofexperimentalanimals,adiscoverythat
Inathree-monthperiodlastyear,twoBrooklyniteshadtobecutoutoftheirapartmentsandcarriedtohospitalonstretchers
随机试题
如图所示PLC梯形图是多线圈输出。()
内因和外因对个体身心发展综合作用的汇合点是()。
大脑皮质机能定位
幂级数的收敛区间为()。
某被估资产购建于2000年,账面原值为10000元,当时该类资产的价格指数为85%,评估基准日该类资产的定基价格指数为170%,该被估资产重置成本是( )元。
某县公安局为贯彻落实县政府火于深化平安建设的意见,拟采取一系列推进“平安校园”建设的措施,构建和谐育人环境。下列不宜采纳为推进措施的是()。
邓小平以其非凡的智慧和坚强的意志带领中国人民走上了改革开放之路,创造了令世界瞩目的成绩。以下名言不是出自邓小平的是()。
据传统货币数量论,货币供应上升50%,则()。
我国在新世纪新阶段全面建设小康社会的政治目标有
A、Threeweeks.B、Amonth.C、Acoupleofweeks.D、2months.CHowlongisJim’swifegoingtostaybythesea?
最新回复
(
0
)