Chengdu is blessed with________warm climate, ...

Chengdu is blessed with________warm climate, which makes it________suitable place to live in．

A．a; /      B．/; the  C．a; a      D．the; the

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Florida is blessed with ______ warm climate, which makes it _____ suitable place for old people to live in.

A. a; 不填　　　　　　　　　　　 B. 不填; the　　　　　　　　　　 C. a; a　　　　　　　　 D. the; a

高三英语单项填空中等难度题查看答案及解析

The climate in Chengdu is warmer than______in Harbin.

A. it　　　　　　　　 B. one　　　　　　　　 C. this　　　　　 D. that

高三英语单项填空中等难度题查看答案及解析

The climate in Chengdu is warmer than______in Harbin.

A. it　　　　　　　　 B. one　　　　　　　　 C. this　　　　　 D. that

高三英语单项填空中等难度题查看答案及解析

Global warming is a big _______ for all and it’s important to raise awareness about climate change.

A．reward           B．concern           C．evolution          D．boom

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The average rainfall in Ningxia is small, _____ makes the climate here is drier ______

with other cities in China.

A. that; compared  B. which; comparing  C. which; compared   D. that; comparing

高三英语单项填空中等难度题查看答案及解析

Chengdu is a city _______ you hate to say goodbye once you have visited it.

A. in which     B. at which         C. to which         D. with which

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Chengdu is a famous city with long history. Locating in the southwest of China, it is the capital city of Sichuan Province, it is called “the Land of Abundance”. It is said that Chengdu got its name over 2000 years ago and it had never changed since then. There is a large number of famous cultural sites and delicious snacks there, which have always been attraction to tourists from around the world. Tourists go not only to see the historical sites and to taste the snacks, but also because that it has beautiful scenery. A walk at the sides of the beautiful Jinjiang River will offer a feast for anyone’s eyes. In a word, Chengdu, as a famous saying goes, is a city where you don’t want to leave once you have come.

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With climate change and overfishing threatening our oceans, it is becoming increasingly important for researchers to closely observe and check sea animals and plants. However, it’s almost impossible to make it since human presence scares the animals. Now, thanks to the robot, aka SoFi, researchers may be able to solve the problem.

Built by MIT’s laboratory, the snow-white remote-controlled robot simulates fish, complete with a flexible tail that moves from side to side and two “fins (鳍)”.

When the robot is under the sea, a motor is pumping water into a pair of balloon-like rooms located in the robot’s tail. These rooms operate similarly to the key parts in engines. As one room expands, the tail bends to one side; when the motor pushes water to the other channel, the tail bends in the other direction. Thus the robot gains the ability to move to where it wants to go.

SoFi solves many of the issues that have affected the usefulness of previous robots --- some types of autonomous underwater vehicles (AUVs)

AUVs traditionally often have had to be tied to a boat because radio frequency communications do not work well underwater. So researchers use sound waves. The new technology can travel greater distances, allowing drivers, by using a controller, to pilot SoFi from up to 50 feet away. SoFi can move around the ocean, unaffected by ropes. Also limiting traditional AUVs’ usefulness is the risk of hitting something, like hard stones. With the outside made of rubber and plastic that can keep its built-in electronics dry, SoFi can efficiently avoid hitting. So a soft robot is more likely to survive a potential crisis.

During test dives in Rainbow Reef, SoFi swam alongside the unsuspecting ocean life at depths of 50 feet for up to 40 minutes at a time, obtaining high-quality photos and videos. More importantly, it was able to do so without causing any disturbance. Researchers say sometimes the fish would swim alongside the strange-looking robot in curiosity, while at other times they appeared to completely ignore its existence. “It’s not perfect, but we’re improving it. Our efforts will pay off,” says Robert Katzschmann.

1.The robot SoFi is created to ________.

A.observe climate change B.help to monitor sea creatures

C.catch fish and observe them D.prevent overfishing in oceans

2.What does the underlined word “simulates” in Paragraph 2 probably mean?

A.Is modeled after. B.Is designed for.

C.Is combined with. D.Is applied to.

3.What’s Paragraph 3 mainly written to show?

A.The shape of SoFi. B.The application of SoFi.

C.The structure of SoFi’s tail. D.The theory of SoFi’s movement.

4.The materials for SoFi’s outside help SoFi to ________.

A.stay safe underwater B.take high-quality photos

C.stay deeper under the sea D.better attract sea creatures

5.What’s Robert Katzschmann’s attitude towards SoFi?

A.Satisfied. B.Negative. C.Hopeful. D.Neutral.

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It is becoming more and more important for researchers to closely observe our sea life, with climate change and overfishing damaging our oceans. However, this is almost impossible since human presence scares the animals. Now, thanks to The Soft Robotic Fish, also called SoFi, researchers may not only be able to keep a close eye on the creatures, but also uncover undersea secrets that have been confusing us for centuries.

Built by MIT's Computer Science and Artificial Intelligence Laboratory (CSAIL), the snow-white remote-controlled robot closely emulates real fish, complete with a flexible tail and two "fins". Though not the first autonomous underwater vehicle (AUV) created to observe the oceans, SoFi solves many of the issues that have hindered (妨碍)the usefulness of previous robots.

AUVs traditionally have had to be tied to a boat because radio frequency communications do not work well underwater. To solve the problem, CSAIL director Daniela Rus and her team used sound waves which can travel greater distances, allowing drivers using a waterproofed Super Nintendo controller to pilot SoFi from up to 50 feet away. To ensure SoFi can freely move around the ocean, a pump moves water from one balloon-like structure to the other through its soft rubber tail, while a controller fitted with a battery powers the robot through the ocean, unhindered by propellers (螺旋桨).

During test dives in Fiji's Rainbow Reef, SoFi moved alongside the sea life at depths of 50 feet for up to 40 minutes at a time, taking high-resolution photos and videos. Even more importantly, it was able to do so without causing any disturbance. The researchers say sometimes the fish would swim alongside the strange-looking robo- fish out of curiosity, while at other times they appeared completely unaware of its existence.

While SoFi currently only records videos, future versions will include sensors. "For us, this fish is magical," says Rus. “We imagine someday it might help us uncover more mysteries from the amazing underwater world that we know so little about."

1.Why was SoFi created?

A.To protect fish from being caught.

B.To stop oceans from being polluted.

C.To learn about the underwater world

D.To solve the issues AUVs have found.

2.Which of the following can replace the underlined word “emulates” in Paragraph2?

A.Feeds. B.Catches.

C.Protects. D.Imitates.

3.What is the third paragraph mainly about?

A.The development of AUVs.

B.Working principles of SoFi.

C.How AUVs are used underwater.

D.SoFi's contribution to fish protection.

4.What is the main advantage of SoFi?

A.It will not scare real fish. B.It can record videos.

C.It is equipped with sensors. D.It cannot be seen by real fish.

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