无论是在四六级考试还是在专四专八考试中，江湖上始终流传着这么一句话：得阅读者得天下。此言非虚。横向对比四级考试试卷的四大组成部分(写作、听力、阅读和翻译)之后不难发现，无论是考试中心所建议的时间分配比还是各部分的分值占比，阅读都举足轻重。为了帮助考生们更好的备考，文都四六级为大家分享2019年12月大学英语四级阅读真题预测8，希望对您有所帮助。
大学英语四级阅读真题预测8
Questions 31 to 35 are based on the followingpassage.
It is hard to track the blue whale, the ocean’slargest creature, which has almost been killed off bycommercial whaling and is now listed as anendangered species. Attaching radio devices to it isdifficult, and visual sightings are too unreliable togive real insight into its behavior.
So biologists were delighted early this year when, with the help of the Navy, they were ableto track a particular blue whale for 43 days, monitoring its sounds. This was possiblebecause of the Navy’s formerly top-secret system of underwater listening devices spanning theoceans.
Tracking whales is but one example of an exciting new world just opening to civilianscientists after the cold war as the Navy starts to share and partly uncover its global networkof 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 systemfor closely monitoring a deep-sea volcanic eruption (爆发) for the first time and that they plansimilar studies.
Other scientists have proposed to use the network for tracking ocean currents andmeasuring changes in ocean and global temperatures.
The speed of sound in water is roughly one mile a second—slower than through land butfaster than through air. What is most important, different layers of ocean water can act aschannels for sounds, focusing them in the same way a stethoscope (听诊器) does when itcarries faint noises from a patient’s chest to a doctor’s ear. This focusing is the main reasonthat even relatively weak sounds in the ocean, especially low-frequency ones, can often travelthousands of miles.
31. The passage is chiefly about ________.
A) an effort to protect an endangered marine species
B) the civilian use of a military detection system
C) the exposure of a U.S. Navy top-secret weapon
D) a new way to look into the behavior of blue whales
32. The underwater listening system was originally designed ________.
A) to trace and locate enemy vessels
B) to monitor deep-sea volcanic eruptions
C) to study the movement of ocean currents
D) to replace the global radio communications network
33. The deep-sea listening system makes use of ________.
A) the sophisticated technology of focusing sounds under water
B) the capability of sound to travel at high speed
C) the unique property of layers of ocean water in transmitting sound
D) low-frequency sounds traveling across different layers of water
34. It can be inferred from the passage that ________.
A) new radio devices should be developed for tracking the endangered blue whales
B) blue whales are no longer endangered with the use of the new listening system
C) opinions differ as to whether civilian scientists should be allowed to use militarytechnology
D) military technology has great potential in civilian use
35. Which of the following is true about the U.S. Navy underwater listening network?
A) It is now partly accessible to civilian scientists.
B) It has been replaced by a more advanced system.
C) It became useless to the military after the cold war.
D) It is indispensable in protecting endangered species
英语四级阅读参考答案：31. B 32. A 33. C 34.D 35. A
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