高二英语周测3 2021/04/18
anything怎么读本试卷满分100分，时间45分钟
I．阅读理解(每题2.5考研数学二大纲分，总分27.5分)
A
Whales，like dolphins，belong to a group of mammals called “cetaceans”．This name comes from a Latin word meaning “large a animals”．There are at least venty-five kinds of cetaceans. Scientists divide the various kinds into two major groups—baleen whales，which do not have teeth，and toothed whales，which have teeth. Whales have the same basic shape as fish，but they differ from fish in many ways. The most noticeable difference is the tail. Fish have vertical tail fins(鳍)，but whales have horizontal tail fins. Fish breathe by means of gills(鳃)，while whales have lungs and must come to the surface to breathe. But they can hold their breath for long periods.
Like other mammals，whales give birth to live young and feed them with milk produced by t
hostagehe mother’s body. Most fish，however，lay eggs and do not feed their young. Whales are also warm-blooded—that is，their body temperature remains about the same all the time. Almost all fish are cold-blooded. Their body temperature changes with changes in the temperature of the water.
Whales have a highly developed brain and they are highly advanced life forms. They sing to their young，engage in complex family relationships，and their communication skills are fine.
In December 2005，a whale，after being rescued from fishing nets，didn’t just swim back to deep water. It hung around and touched each of the divers with its mouth. “Knowing that it was free，it stopped about a foot away from me，pushed me around a little bit and had some fun，” said dive master James Moskito.He thought it was “one of the most fantastic moments” of his life.
1．According to Paragraph 1，which of the following shows the correct relationship?
A．Mammals are a type of cetacean. B．Cetaceans are not a type of mammal.
C．Whales belong to the cetacean family. D．Mammals are a type of whale.
2．Which of the following is NOT a difference between whales and fish?
高中英语听力A．Whales breathe by means of lungs.
B．Whales have tail fins.message
C．Whales feed their young with milk.篮球的英文
D．A whale’s body temperature nearly doesn’t change.
3．Why didn’t the whale swim back to the a after it was saved?
A．It lost its way in the a. B．It was riously wounded.
汽车降温C．It was frightened by the divers. D．It wanted to thank the divers.
B
switchon
Some years ago，Michel Andre found himlf staring at the body of a dead whale on a beach in the Canary Islands. It was obvious that the animal had been struck violently by a ship—but why? Only later，after surveying the whales which lived in the area and measuring the increa of sound pollution from ships did it become clear that there was a link.
The whales had become densitid to the noi of approaching boats and were being struck by them，often riously. “We never thought that this could be something that could kill，” recalls Andre，who is the director of the Laboratory of Applied Bioacoustics at the Technical University of Catalonia，Barcelona.
Andre has spent 20 years developing an advanced system to better understand why incidents like this happen. His underwater microphones have expod a world of deafening sound and animal communication never obrved with such clarity(清晰) before.
It was not an easy task. Sound waves don’t travel through water in the uniform，predicta
ble way they do through the air. Instead，the temperature，salinity(盐度) and，flow of water have great effects on their path.
What can be done? One solution is to change shipping routes to cours where ships are statistically less likely to meet animals. It’s also possible to slow ships down to 18km/h or less，which is less likely to riously injure a whale.
As for dealing with the root cau of the problem，the UN’s International Maritime Organisation has already published guidelines on how to quieten ships，but it will be a while before the effects of such changes might be obrved.
“The ocean is not our world，” comments Andre. But it is ours to look after. And thanks to his work，we can better understand the effects of suba sound pollution.
4．What does the underlined word “densitid” in Paragraph 2 mean?
A．Stubborn. B．Flexible. C．Dull. D．Friendly.
5．What’s one way to solve the problem according to the text?
A．To lower the speed of ships.
B．To reduce the number of ships.
bowl是什么意思
木偶奇遇记故事C．To t up prerves under the a.
D．To give the injured animals timely treatment.
6．What is the author’s attitude towards what Michel Andre has done?
A．Doubtful. B．Disapproving. C．Positive. D．Uncaring.
7．What is the text mainly about?
A．A great expert. B．Noi in the a.
C．Animals in the a. D．Sea exploration technology.
C
California has lost half its big trees since the 1930s, according to a study to be published Tuesday and climate change ems to be a major factor(因素).
