Explorer of the Extreme Deep Alvin was launched in 1964.Since then，Alvin has worked between 200 and 250 days a year，says Daniel Fornari，a marine geologist and director of the Deep Ocean Exploration Institute at WHOI.During its lifetime，Alvin has carried some 12,000 people on a total of more than 3,000 dives. A newer，better versions of Alvin is bound to reveal even more surprises ahout 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. 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. Woods Hole：美国马萨诸塞州的一个渔村，但同时拥有许多重要研究机构，如：the Marine Biological Laboratory，the Sea Education Association以及the Woods Hole Oceanographic lnstitution。 练习： A A research institute. C A submersible. Which of the following statements is NOT a fact about Alvin? B It has played a key role in various important undersea expeditions D It has been used for more than 40 years. A the earth. C the ocean. A Size. C Capacity. In what aspects are the new HOV and Alvin different? B Speed. D Both A and B.
上一篇： 职称英语理工类C级阅读理解精华练习(3)
下一篇： 职称英语综合类阅读理解练习题(35)
2017届高考英语一轮复习基础巩固学案：Challenging Yourself Ⅰ《Man and Pets》（重大版必修4）
2017届高考英语一轮复习基础巩固学案：Challenging Yourself Ⅱ《Enjoying Sports》（重大版必修1）
2017高考英语一轮专项训练：完形填空及阅读理解（5）含答案
2017届高考英语一轮复习基础巩固学案：Unit 2《Animal Kingdom》（重大版必修4）
2017届高考英语一轮复习基础巩固学案：Unit 6《Internet Shopping》（重大版必修5）
2017届高考英语一轮复习基础巩固学案：Unit 2《The Olympic Games》（重大版必修2）
2017届高考英语一轮复习基础巩固学案：Unit 3《Travel journal》（重大版必修1）
2017届高考英语一轮复习基础巩固学案：Unit 2《Working the land》（重大版必修4）
2017高考英语一轮专项训练：完形填空及阅读理解（7）含答案
2017届高考英语一轮复习基础巩固学案：Unit 1《Cultural relics》（重大版必修2）
2017届高考英语一轮复习基础巩固学案：Unit 1《Favourite Teachers》（重大版必修1）
2017届高考英语一轮复习基础巩固学案：Unit 5《Art and Culture》（重大版必修3）
2017届高考英语一轮复习基础巩固学案：Unit 3《The Million Pound Bank Note》（重大版必修3）
2017届高考英语一轮复习基础巩固学案：Unit 3《Dreams and Dreamers》（重大版必修3）
2017届高考英语一轮复习基础巩固学案：Challenging Yourself Ⅱ Being Honest》（重大版必修2）
2017届高考英语一轮复习基础巩固学案：Challenging Yourself Ⅱ《Countries and Regions》（重大版必修4）
2017届高考英语一轮复习基础巩固学案：Unit 5《Special Clothes》（重大版必修1）
2017届高考英语一轮复习基础巩固学案：Unit 2《Learning form Helen Keller》（重大版必修2）
2017届高考英语一轮复习基础巩固学案：Challenging Yourself Ⅰ《Talking About Schools》（重大版必修1）
2017届高考英语一轮复习基础巩固学案：Unit 1 Challenging Yourself Ⅰ（重大版选修7）
2017届高考英语一轮复习基础巩固学案：Unit 3《A taste of English humour》（重大版必修4）
2017届高考英语一轮复习基础巩固学案：Unit 1 Challenging Yourself Ⅰ（重大版选修8）
2017届高考英语一轮复习基础巩固学案：Unit 5 Challenging Yourself Ⅲ（重大版选修8）
2017届高考英语一轮复习基础巩固学案：Unit 1《Plant World》（重大版必修4）
2017届高考英语一轮复习基础巩固学案：Unit 5《Nelson Mandela a modern hero》（重大版必修1）
2017届高考英语一轮复习基础巩固学案：Unit 5《Magic Internet》（重大版必修5）
2017届高考英语一轮复习基础巩固学案：Challenging Yourself Ⅲ《Knowing About Houses》（重大版必修1）
2017高考英语一轮专项训练：完形填空及阅读理解（4）含答案
2017届高考英语一轮复习基础巩固学案：Unit 6《Healthy Diet》（重大版必修1）
2017届高考英语一轮复习基础巩固学案：Unit 4《Earthquakes》（重大版必修1）