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
32
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、8
B、9
C、10
D、11
答案
D
解析
转载请注明原文地址:https://jikaoti.com/ti/WuBsFFFM
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
Inathree-monthperiodlastyear,twoBrooklyniteshadtobecutoutoftheirapartmentsandcarriedtohospitalonstretchers
Forthefirsttime,scientistshaveprofiledspecificgeneticchangesduringtheagingofexperimentalanimals,adiscoverythat
Forthefirsttime,scientistshaveprofiledspecificgeneticchangesduringtheagingofexperimentalanimals,adiscoverythat
Inathree-monthperiodlastyear,twoBrooklyniteshadtobecutoutoftheirapartmentsandcarriedtohospitalonstretchers
Inathree-monthperiodlastyear,twoBrooklyniteshadtobecutoutoftheirapartmentsandcarriedtohospitalonstretchers
Inathree-monthperiodlastyear,twoBrooklyniteshadtobecutoutoftheirapartmentsandcarriedtohospitalonstretchers
Inathree-monthperiodlastyear,twoBrooklyniteshadtobecutoutoftheirapartmentsandcarriedtohospitalonstretchers
随机试题
论述制度条件对行政组织的极端重要性。
求y’’+y’一12y=(x+2)e-x的通解.
国家助学贷款的贷款对象是中华人民共和国境内的(不含香港特别行政区和澳门特别行政区、台湾地区)普通高等学校中经济确实困难的全日制()。
一般资料:求助者,男性,31岁,研究生,公司开发人员。案例介绍:求助者长相较好,人际关系出色,工作勤奋。三个月以前因公事出差,因为水土不服产生腹泻症状。当时的症状很严重,求助者一夜没有睡觉。并出现了胸闷、呼吸不畅、心跳加快、胃部痉挛等不适症状。求
新时期幼儿园双重任务的特点是什么?
从某种意义上讲,思维的过程就是发现问题和解决问题的过程。()(2014.湖南)
论述义和团运动的背景及影响
下图标明了六个城市(A~F)之间的公路(每条公路旁标注了其长度公里数)。为将部分公路改造成高速公路,使各个城市之间均可通过高速公路通达,至少要改造总计(26)公里的公路,这种总公里数最少的改造方案共有(27)个。(26)
Predictionsofmanyrobotsinindustryhaveyetcometrue.Fortenyearsormore,manufacturersofbigrobotshaveexplainedhow
Anelderlywomandiedyesterdayafterbeingknockeddownbyamotorist.Thedriverhad【C1】______noattempttobrake.Whenapol
最新回复
(
0
)