The biggest whale is _______ blue whale, which grows to be about 29 meters long—the height of______ 9-story building.
A.the; the B.a; a C.a; the D.the; a
高二英语单项填空中等难度题
The biggest whale is ___ blue whale, which grows to be about 29 meters long—the height of _____ 9-story building.
A. the; the B. a; a C. a; the D. the; a
高二英语单项填空简单题查看答案及解析
The biggest whale is _______ blue whale, which grows to be about 29 meters long—the height of______ 9-story building.
A.the; the B.a; a C.a; the D.the; a
高二英语单项填空中等难度题查看答案及解析
The biggest whale is ________ blue whale,which grows to be about 29 meters long—the height of ________ 9-story building.
A.the;the B.a;a C.a;the D.the;a
高二英语单项填空中等难度题查看答案及解析
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 an 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 (爆发) 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.
1.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
2.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
3.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 travelling across different layers of water____
4.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 military technology
D. military technology has great potential in civilian use
5.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.
高二英语阅读理解中等难度题查看答案及解析
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 an 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 (爆发) 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.
81. 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
82. 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
83. 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 travelling across different layers of water____
84. 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 military technology
D. military technology has great potential in civilian use
85. 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.
高二英语阅读理解简单题查看答案及解析
It’s hard to track the blue whale, which has almost been killed off by commercial whaling. 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 US Navy, they are able to track a particular blue whale for 43 days recording its sounds. This was possible because of the Navy’s former top secret system of underwater listening devices across the oceans.
Tracking whales is but one example of an 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 observing a deep-sea volcanic eruption for the first time and that they planned similar studies. Other scientists have proposed to use the network for tracking ocean currents and measuring changes in the ocean and global temperatures. 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.
1.The underwater listening system was originally designed _________________.
A. to trace and locate enemy ships
B. to observe deep sea volcanic eruptions
C. to study the movement of ocean currents
D. to replace the global radio communications network
2.The deep-sea listening system makes use of __________________.
A. the ability of sound to travel at high speed
B. the top-level technology of focusing sounds under water
C. the unique characteristic of layers of ocean water in carrying sound
D. low-frequency sounds traveling across different layers of water
3.What can we infer from the passage?
A. New radio devices are developed for tracking the blue whales.
B. Blue whales are no longer endangered with the new system.
C. Opinions differ on the use of military technology.
D. Military technology has great potential in civilian use.
4.What is the passage 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 US Navy top-secret weapon.
D. A new way to look into the behavior of blue whales.
高二英语阅读理解困难题查看答案及解析
From July to October every year, about a quarter of the world’s blue whales feed in the Pacific Ocean off the coast of California. But the whales currently face a major threat in their favorite feeding area. Ships carrying cargo (货物)sail in the same area at the same time. All too often, the whales’ paths and the ships’ travel lines overlap (重叠), and a ship will hit a whale.
According to a new study, these ship strikes have become a serious threat to the overall population of the world’s blue whales. Only about 10,000 of the creatures still exist worldwide. Blue whales are the largest known animals ever to live on Earth. Even so, if hit by a container ship, a blue whale will likely die from its injuries.
In 2007 alone, large ships killed five blue whales in the waters off San Francisco and Los Angeles, California. The National Oceanic and Atmospheric Administration (NOAA) says that because there are so few whales already, losing three to five from the California whale population every year is a significant loss. “The estimated population of blue whales in this part of the Pacific is 2,500”, says Sean Hastings, a NOAA analyst. “So every whale counts toward this species moving off the endangered-species list.”
Now, marine scientists must figure out how to protect the whales from the giant container ships. One very simple program is already under way in the Santa Barbara Channel, a waterway that separates mainland California from the nearby Channel Islands.
The Channel Islands National Marine Sanctuary has asked large container ships passing through the area to voluntarily slow down. Sailing slower will allow the ships‟ crew (船员)more time to change course before hitting a whale.
Several of the world’s largest shipping lines are set to participate in the new program. For every ship that passes through the Santa Barbara Channel at or below the reduced speed of 12 knots (海里/小时), the company that owns the ship will be paid $2,500.
1.From Paragraph 1, we can know that_____.
A. people intend to illegally hunt blue whales for money
B. large ships often carrying goods may pollute the sea
C. the container ships may hit the blue whales frequently
D. there is fewer fish in blue whales‟ favorite feeding area
2.Why is the death of several whales regarded as significant loss to the world's blue whales?
A. Because the number of the blue whales is so small.
B. Because other blue whales will be scared away.
C. Because blue whales are the largest animals in the world.
D. Because many blue whales get killed throughout the year.
3.According to Sean Hastings, it’s inferred that .
A. the number of the blue whales is decreasing sharply.
B. the blue whales are still on the endangered-species list.
C. most of the world’s blue whales live in the Pacific Ocean.
D. blue whales are often disturbed by other endangered creatures.
4.What are the last three paragraphs mainly about?
A. The basic responsibility of a sailor.
B. Measures to protect the blue whales.
C. The world’s largest shipping lines.
D. Ways to slow down the speed of the ships.
高二英语阅读理解中等难度题查看答案及解析
Let me tell you, Johnson, this is going to be the biggest development in animal-imitative cybernetics (动物模仿控制学) since Hayes pioneered the field way back in 2014. Everybody’s going to want a piece of my discovery! Everyone! Even United States of Earth Defense! I’m going to be the richest man alive!
I can see you don’t share my excitement yet. Just wait, old friend. Accompany me to my lab, and we will see who has the last laugh. You’ll be begging me to take you on as a lab assistant after I...Oh, here we are. You first, my good man. You see, I had already come up with the perfect cybernetic engine, able to copy any life form. The question was, which creature would be the best show of my discovery? I’ve used a life form nobody’s considered for cybernetics. It is powerful, graceful, intelligent, and best of all people love it. I chose the tiger!
Go on, have a glance! Ha! Don’t look so shocked, Johnson. I leave it powered down when I’m not testing it. It is rather great, though. Yes, all the latest technology, including claws ( 爪 ) I had made from vanadium alloy(合金). It cuts through steel like its wet cardboard. The process that I used to get its mind in the computer will be enough to ensure me fame and fortune.
Huh? It did move, didn’t it? I guess I left it on yesterday. No, don’t look so nervous; I can shut off its main power with this remote(遥控器)right here. Nothing to worry about. I really don’t think it’s regarding you as a meal. Be reasonable, old...Oh, God! Johnson! The remote, where is it? Where?!
Ah, there we go! Too late to save Johnson, though. What a pity. Better safe than sorry. There! God, what a mess. Even worse, I can’t call the police now; the bad publicity would overshadow my breakthrough, and certainly frighten the investors. I’ve got to get rid of the body secretly, somehow. I could bury it, but I might be seen. I could burn it, but the smoke would be very doubtful. What to do?
What to...
I wonder...How fast can this cat eat?
1.What’s the author’s attitude towards his invention?
A. Proud. B. Disappointed.
C. Cheerful. D. Astonished.
2.It can be inferred that the invention in the passage is a____.
A. surprise B. success
C. failure D. wonder
3.According to the passage, what was the worst result of this invention?
A. He couldn’t get rid of his friend’s body. B. The robot tiger killed his friend.
C. He couldn’t control the robot tiger. D. The robot tiger had to be improved.
4.What does the last sentence “I wonder...How fast can this cat eat” suggest?
A. The writer wanted to know if he could find a cat to eat John’s body.
B. The writer wondered how fast this cat could eat a person.
C. The writer wanted to test whether this machine tiger is powerful enough.
D. The writer wanted to cover up the facts that his experiment is a failure.
高二英语阅读理解困难题查看答案及解析
The plastic bottle, ________ top cut off, is used to grow a flower in.
A. whose B. of which C. its D. which
高二英语单项填空中等难度题查看答案及解析
The plastic bottle, __________top cut off, is used to grow a flower in.
A.whose | B.of which | C.its | D.which |
高二英语单项填空简单题查看答案及解析