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
Influenced by movies and popular novels, most people see sharks as people-eating monsters. This is far from the truth. Every yea
Influenced by movies and popular novels, most people see sharks as people-eating monsters. This is far from the truth. Every yea
admin
2010-09-10
99
问题
Influenced by movies and popular novels, most people see sharks as people-eating monsters. This is far from the truth. Every year, a few types of sharks injure about 100 people worldwide and kill about 25. Most attacks are by great white sharks, which often feed on sea lions and other marine mammals (海洋哺乳动物) . They sometimes mistake human swimmers for their normal prey, especially if they are wearing black wet suits.
If you are a typical ocean-goer, your chances of being killed by an unprovoked attack by a shark are about 1 in 100 million. You are more likely to be killed by a pig than a shark and thou sands of times more likely to get killed when you drive a car. Sharks help save human lives. In addition to providing people with food, they are helping us learn how to fight cancer, bacteria (细菌), and viruses. Sharks are very healthy and have aging processes similar to ours. Their highly effective immune system allows wounds to heal quickly without becoming infected, and their blood is being studied in connection with AIDS research.
Sharks are among the few animals in the world that almost never get cancer and eye cataracts (白内障). Understanding why can help us improve human health. Chemicals extracted from shark cartilage (软骨) have killed cancerous tumors in laboratory animals, research that someday could help prolong your life.
Sharks are needed in the world’ s ocean ecosystem. Although they don’ t need us, we need them. We are much more dangerous to sharks than they are to us. For every shark that bites a person, we kill one million sharks.
By the second sentence of Paragraph 2, the author means to show that ______.
选项
A、pigs attack human beings more frequently than sharks
B、people get hurt much more easily in a car accident
C、people get killed more easily by pigs or car accident than by sharks
D、sharks rarely kill human beings when they are not provoked to do so
答案
D
解析
细节题。文章紧紧围绕着鲨鱼来展开,而且前两段都是讲鲨鱼攻击人类的概率和频率的。第二段第一句说If you are a typical ocean-goer,your chances of being killed by an unprovoked attack by a shark are about 1 in 100 million(如果你经常泡在海里,你无缘无故被鲨鱼攻击的概率只有亿分之一),紧接着把鲨鱼伤人与猪伤人和交通事故中人员伤亡的概率进行比较,其目的归根到底是为了说明鲨鱼在没有被激怒的时候伤人的概率非常低,故答案为D。
转载请注明原文地址:https://kaotiyun.com/show/pB87777K
0
大学英语四级
相关试题推荐
Energylevelsebbandflowthroughouttheday,influencedbyeverythingfromyourmoodtoyourbody’scircadianrhythms(生理节奏)—d
Energylevelsebbandflowthroughouttheday,influencedbyeverythingfromyourmoodtoyourbody’scircadianrhythms(生理节奏)—d
NicotineIfitweren’tfornicotine,peoplewouldn’tsmoketobacco.Why?Becauseofthemorethan4000chemicalsintobacco
Havingnolanguage,infantscannotbetoldwhattheyneedtolearn.Yet,thefirstyearsoflifeisbelievedtobethemostfavo
Havingnolanguage,infantscannotbetoldwhattheyneedtolearn.Yet,thefirstyearsoflifeisbelievedtobethemostfavo
A、Sports.B、Physiology.C、Psychology.D、Biology.D
Canmoneybuyhappiness?Yes,exclaimtheauthorsofanew【M1】______study—butonlyuptoapoint.Psychologyhas
Canmoneybuyhappiness?Yes,exclaimtheauthorsofanew【M1】______study—butonlyuptoapoint.Psychologyhas
Shynessisthecauseofmuchunhappinessforagreatmanypeople.Shypeopleareanxiousandself-conscious;thatis,theyare【B
随机试题
在原料液组成及溶剂化(S/F)相同条件下,将单级萃取改为多级萃取,如下参数的变化趋势是萃取率()、萃余率()。
患儿男,1岁2个月,人工喂养,平时烦躁易惊、睡眠不安多汗,方颅、枕,秃、鸡胸。血钙磷乘积<30,碱性磷酸酶增高。x线检查:临时钙化带消失。临床诊断为维生素D缺乏性佝偻病对该患儿的护理措施哪项不正确()
诊断可能为该心律失常伴严重血流动力学障碍时治疗应首选
砌体材料中的黏土空心砖与普通黏土砖相比所具备的特点,下列哪条是错误的?[2003年第018题]
国家对从事建设项目环境影响评价工作的单位实行资格审查制度,从事项目环境影响评价工作的单位,必须取得()颁发的资格证书。
非结算会员客户的持仓达到期货交易所规定的持仓报告标准的,客户应当通过非结算会员向()报告。
甲、乙、丙3人合伙开饭店,甲以门面房折价10万元出资,担任店长;乙出资现金5万元,负责经营管理;丙以技术出资,作价3万元。3人约定盈余均分,亏损由乙承担。该饭店经营两年后,欠丁6万元。对此债务()。
要将VisualFoxPro系统菜单恢复成标准配置,可执行SETSYSMENUNOSAVE命令,然后再执行命令:
CAD指的是
Iamoptimisticabouthumanrelationships—inparticular,aboutfriendship.Perhapsyouhaveheardaboutgloomypredictionsabout
最新回复
(
0
)