职称英语理工类考试考前每日一练
Explorer of the Extreme Deep
Oceans cover more than twothirds of our.planet.Yet,just,a small fraction of the underwater world has been explored.Now,Scientists at.the Woods Holel Oceanographic institutionin Massachusetts are building an underwater vehicle that will,carry explorers as deep as 6,500 meters.The new machine,known as a manned submersible or humanoperated vehicle,willrep]ace another one named Alvin2 which has an amazing record of discovm7,playing a key.role in various important and famous undersea expeditions.Alvin has been operating for 40 years but can go down only 4,500 meters.Its about time for an w/grade,WHOI researchers say.
Alvin WaS launched in:1964.Since then,Alvin has worked between 200 and 250 days a year,says Daniel Fornarl.a marine geologist al3d director of the Deep Ocean Exploration Institute at WHODuring its lifetime,Alvin has
cmried some l2,000 people on a total of more than 3,000 dives。
A newer,better;versions of Alvin is bound to reveal even more surprises aboul,a world that is still full of mysteries,Fornari says.It might also make the job of exploration a little easier,We take so much for granted on land,Fornari says.We can walk around and see with our eyes how big things are.We can see Colors,special arrangements.
Sizewise,the new HOV will be similar to Alvin。Itll be about 37 feel,long.The setting area inside will be a small sphere,about 8 feet wide,like Alvin,itll carry a pilot and two passengers.It will be just as maneuverable.In most other ways,it will give passengers more opportunities to enjoy the view,for one thin9。Alvin has only three windows,the new vehicle will have five,with more overlap so that the passengers and the pilot.can see the sarab thing.
Alvin can go up and down at a rate of 30 meters every second,and its maximum speed is 2 knots,while the new vehicle will be able to ascend and descend at 44 meters per second.Itll reach speeds of 3 knots,or 3.5 miles per hour.
词汇:
manned adj.载人的 sphere n.球体;范围
undersea adj.海底的 maneuverable adj.机动的,可调动的
submersible n.潜艇;潜水器 overlap v.n.重叠
1.What is Alvin?
A.A research institute.
B.A transporting vehicle.
C.A submersible.
D.A scientist.
2.Which of the following statements is NOT a fact about Alvin?
A.It can carry explorers as deep as 6,500 meters.
B.It has played a key role in various important undersea expeditions
C.It was launched in the sixties of the twentieth century.
D.It has been used for more than 40 years.
3.a world that is still full of mysteriesrefers to
A.The earth.
B.Out space.
C.The ocean.
D.Mars.
4.In what aspects are the new HOV and Alvin similar?
A.Size.
B.Speed.
C.Capacity.
D.Shape.
5.In what aspects are the new HOV and Alvin different?
A.Offering better views.
B.Speed.
C.Size.
D.Both A and B.
上一篇: 职称英语常考固定搭配与短语背诵计划第三天
下一篇: 职称英语考前通关训练营基础版第6期
国际英语资讯:Feature: Decline of Chinese students interest in Finland baffles Finnish decision makers
娱乐英语资讯:Feature: Veteran U.S. musician cherishes lasting bond with China
肥胖基因让你吃多少都不饱
墨西哥南部发生7.6级地震 群众:整个世界在震动
汽柴油价今起每吨涨600元 汽油全面进入8元时代
传维基解密创始人阿桑奇将参选澳大利亚参议员
中国菜获官方英文名
员工最想逃离的10大华尔街投行
执着日本人被GPS成功导入海里
研究:爱走神的孩子更聪明
男子在家中自建总统办公室
全球十大亿万富豪城市排名:莫斯科三次问鼎香港第四
“重量级”科学研究:肥胖乃是命中注定
国内英语资讯:China opposes U.S. interference in Venezuelas internal affairs: FM spokesperson
国内英语资讯:Hong Kongs most urgent task is to stop violence, end chaos, restore order
浏览器囧调查:谷歌Chrome用户比IE用户更聪明?
迷你小小狗狗
考研英语泄题 复试加难度测可疑考生
淘宝是如何在中国战胜eBay的
美丽从清晨开始:9招教你每天醒来也要美美的