考生在线咨询

湖南成考网微信公众号 湖南成考网微信公众号
返回顶部∧
    欢迎访问湖南成考网!本网站为民间交流网站,主要为广大考生提供报考指导服务,网站信息仅供学习交流使用,官方信息以湖南省教育考试院www.hneao.edu.cn/为准。
  • 咨询电话:0731-85468015
城市:
成考系统:
所在位置:湖南成考网 > 复习资料 > 专升本 > 正文

2019年湖南成人高考专升本英语练习试题(五)

2019-09-28 09:27:52   来源:湖南成考网    点击: 学习交流群+ 加入 微信公众号+ 关注
作者:王老师
  122. It is hard to track the blue whale, the ocean’s largest creature, which has almost been killed off by commercial whaling and is now listed as an endangered species. Attaching radio devices to it is difficult, and visual sightings are too unreliable to give real insight into its behavior. So biologists were delighted early this year when, with the help of the Navy, they were able to track a particular blue whale for 43 days, monitoring its sounds. This was possible because of the Navy’s formerly top-secret system of underwater listening devices spanning the oceans. Tracking whales is but one example of all exciting new world just opening to civilian scientists after the cold war as the Navy starts to share and partly uncover its global network of underwater listening system built over the decades to track the ships of potential enemies. Earth scientists announced at a news conference recently that they had used the system for closely monitoring a deep-sea volcanic eruption for the first time and that they plan similar studies. Other scientists have proposed to use the network for tracking ocean currents and measuring changes in ocean and global temperatures. The speed of sound in water is roughly one mile a second, slower than through land but faster than through air. What is most important, different layers of ocean water can act as channels for sounds, focusing them in the same way a stethoscope (听诊器) does when it carries faint noises from a patient’s chest to a doctor’s ear. This focusing is the main reason that even relatively weak sounds in the ocean, especially low-frequency ones, can often travel thousands of miles. [共5题]

  (1) The passage is chiefly about ________.

  (A) an effort to protect an endangered marine species

  (B) the exposure of a US Navy top-secret weapon

  (C) the civilian use of a military detection system

  (D) a new way to look into the behavior of blue whales

  正确答案:C

  (2) The underwater listening system was originally designed ________.

  (A) to monitor deep-sea volcanic eruptions

  (B) to replace the global radio communications network

  (C) to study the movement of ocean currents

  (D) to trace and locate enemy vessels

  正确答案:D

  (3) The deep-sea listening system makes use of ________.

  (A) the unique property of layers of ocean water in transmitting sound

  (B) the capability of sound to travel at hligh speed

  (C) low-frequency sounds travelling across different layers of water

  (D) the sophisticated technology of focusing sounds under water

  正确答案:A

  (4) It can be inferred from the passage that ________.

  (A) blue whales are no longer endangered with the use of the new listening system

  (B) new radio devices should be developed for tracking the endangered blue whales

  (C) military technology has great potential in civilian use

  (D) opinions differ as to whether civilian scientists should be allowed to use military technology

  正确答案:C

  (5) Which of the following is true about the US Navy underwater listening network?

  (A) It has been replaced by a more advanced system.

  (B) It is now partly accessible to civilian scientists.

  (C) It became useless to the military after the cold war.

  (D) It is indispensable in protecting endangered species.

  正确答案:B

  想获取完整文档版成考复习资料,可关注下方二维码回复“备考资料”。

成考倒计时

330

立刻定制专属提升方案

获取方案 OR 点我咨询 点我关注 点我加群

湖南成考网申明:

(一)由于各方面情况的调整与变化本网提供的考试信息仅供参考,敬请以教育考试院及院校官方公布的正式信息为准。

(二)本网注明信息来源为其他媒体的稿件均为转载体,免费转载出于非商业性学习目的,版权归原作者所有。如有内容与版权问题等请与本站联系。联系方式:邮件429504262@qq.com

未经授权不得转载,如需转载请注明出处。

转载请注明:文章转载自 湖南成考网 [http://www.crgkw.hn.cn/]
本文关键词:
本文地址:https://www.crgkw.hn.cn/show-1033-7293-1.html

上一篇:2019年湖南成人高考专升本英语练习试题(四)
下一篇:2019年湖南成人高考专升本英语练习试题(六)

湖南成人高考提升便捷服务

【考试时间:10月30、31日】

湖南成人高考报名系统 成绩及录取查询系统
距2021全国成人高考:仅剩 330
【请广大考生提前备考】