[时闻型阅读理解]
(限时:25分钟)A
MIT researchers and their colleagues are working to find out whether energy from trees can power a network of sensors (传感器) to prevent spreading forest fires.(走私的) radioactive materials.including remote automated weather stations. But these stations are expensive and sparsely (稀疏地) distributed. Additional sensors could save trees by providing better local climate data to be used in fire prediction models and earlier warnings. However, recharging or replacing batteries by hand at very hardtoreach locations makes it impractical and costly.
The new sensor system seeks to avoid this problem by developing trees into a selfsustaining power supply. Each sensor is equipped with a battery that can be
slowly recharged using electricity produced by the tree. “A single tree doesn't generate a lot of power, but over time the trickle (细流) charge adds up, just like ‘________’”, said Shuguang Zhang, one of the researchers on the project and the associate director of the MIT's Centre for Biomedical Engineering (CBE).
The system produces enough electricity to allow the temperature and humidity sensors to wirelessly send out signals four times a day, or immediately if there's a fire. Each signal spreads from one sensor to another, until it reaches an existing weather station that sends the data by satellite to a forestry command centre in Boise, Idaho.
Scientists have long known that trees can produce extremely small amounts of electricity. But no one knew exactly how the energy was produced or how to take advantage of the power.
1.What are the disadvantages of the remote automated weather stations?
A.They cost too much.
b.They are of poor quality.
c.They are not enough.
d.They can't reach remote places.
A.a, b
B.b, d
c
D.b, cFar water does not put out near fire.
B.All rivers run into the sea.
C.Many a little makes a mickle.
D.It never rains but it pours.
3.What Shuguang Zhang said in Paragraph 4 means that ________.a single tree is enough to generate much power
B.the power from the tree can't be stored
C.trees can generate enough power for our life
D.a tree can produce the electricity to meet the needs of a sensor
4.What would the author talk about after the last paragraph of the passage?
A.The amount of electricity trees produce.
B.How trees produce electricity.
C.Trees' contribution to society.
D.The research process of tree power.
5.What would be the best title for the passage?
A.Preventing forest fires with tree power
B.Trees can produce electricity
C.Tree power in daily life
D.Developing new energy
B
(NEW YORK) A French tourist highly praised for rescuing a twoyearold girl in Manhattan said he didn't think twice before diving into the freezing East River.
Tuesday's Daily News said 29year璷ld Julien Duret from France was the man who left the spot quickly after the rescue last Saturday.
He lifted the little girl o.ut of the water after she fell off the bank at the South Street Seaport museum. He handed the girl to her father, David Anderson, who had dived in after him.
揑 didn't think at alls,” Duret told the Daily News. “It happened very fast. I reacted very fast.”Duret, an engineer on vacation, was walking with his girlfriend along the pier(码头) when he saw something falling into the water. but realized it was a child when he approached the river. Immediately, he took off his coat and jumped into the water.When he reached the girl, she appeared lifeless, he said. Fortunately, when she was out of the water, she opened her eyes.
Anderson said his daughter slipped off the bank when he was adjusting his camera. An ambulance came later for her, said Duret, who was handed dry clothes from onlookers. Duret caught a taxi with his girlfriend shortly after.
The rescue happened on the day before he left for France. Duret said he didn't realize his story of heroism had greatly moved New York until he was leaving the city the next morning.“I don't really think I'm a hero,” said Duret. “Anyone would do the same thing.”To meet his girlfriend.
B.To spend his holiday.
C.To work as an engineer.
D.To visit the Andersons.
2.What did Duret do shortly after the ambulance came?
A.He was interviewed by a newspaper.
B.He went to the hospital in the ambulance.
C.He disappeared from the spot quickly.
D.He asked his girlfriend for his dry clothes.
3.Who dived after Duret into the river to save the little girl?
A.David Anderson.
B.A passerby.
C.His girlfriend.
D.A taxi driver.
4.Which of the following is TRUE according to the passage?
A.Duret thought twice before he jumped into the cold water.
B.Duret dived into the water before the girl's father.
C.The rescue happened on the day Duret left for France.
D.Duret didn't think he was brave enough to be a hero.
5.What is probably the headline of this news report?
A.A Careless Father
B.A Poor Girl
C.Warmhearted Onlookers
D.Brave Frenchman Found
C
Scientists have not found any signs of life on Mars yet, but they say a robotic vehicle called “Curiosity” is helping them learn a lot about the planet's history and climate.
Curiosity landed on Mars in August 2017 after travelling through space for more than eight months. It was sent to Mars by scientists from NASA in the United States.
Curiosity is about the size of a car and has six wheels. It also has a robotic arm, cameras, and instruments that allow it to examine things it finds on the surface. Then it sends the information back to the earth.
Curiosity's main task is to find out if anything could live on Mars, either now or in the past. On Nov. 2, NASA scientists held a press conference (资讯发布会) to discuss what Curiosity had found in its first two months on Mars.(火山) on the earth. Scientists say that studying the minerals in Martian soil will help them understand what conditions were like on the planet in the past. Curiosity also found smooth stones like the ones found on river beds and seashores on the earth, where their rough edges have been worn down by water. Mars is very cold and dry now, but scientists say the smooth stones tell them that a river used to run through the place where they were found.
Curiosity has been testing the atmosphere around Mars for a type of gas called methane (甲烷), but so far it has not found any. On the earth, most methane is produced by plants or animals. Methane on Mars might indicate that some type of tiny plants or animals lived there.It will continue to explore the planet for about two years.
1. Which of the following descriptions about Curiosity is TRUE?
A.It landed on Mars in January 2017.
B.It is small in size and has four arms.
C.It took over eight months to arrive in Mars.
D.It was sent to Mars by scientists from Russia.
2. According to the information sent back by Curiosity, scientists believe that________.there's no air on Mars
B.Mars is warm and wet now
C.the soil on Mars is rich
D.there used to be water on Mars
3. The underlined word “they” in Paragraph 5 refers to“________”.smooth stones
B.rivers
C.robotic vehicles
D.volcanoes
4. We know from the sixth paragraph that________.some tiny animals once lived on Mars
B.there are no plants or animals on Mars now
C.the atmosphere around Mars is full of methane
D.Curiosity is designed to test the atmosphere around the earth
5. What is the main idea of the passage?
A.Humans benefit a lot by going to Mars.
B.Scientists will stop the research on Mars soon.
C.It is possible to build an earthlike environment on Mars.
D.A robotic vehicle helps scientists get useful information from Mars.
专题限时训练(十四)【要点综述】 本文是一篇资讯报道,介绍了科学家们的发现:树能为预防森林火灾的传感器供电。 细节解释题。文章第三段提到的美国森林服务机构现在所采用的工具和方法花费高、分布少。如增加传感器,边远地区将无法充电或换电池,故选C项。 推理判断题。根据上下文可知此处为“积少成多”的含义。故选C。A“远B“海纳百川”;D“不雨则已,一雨倾盆”。 细节理解题。第四段中研究人员指出,一棵树产生不了多少能量,但随着时间的推移,细小的能量会不断增加,就像不断滴水的水龙头也能滴满一桶一样,故D项正确。 文章结构题。文章最后一段最后一句提到没人确切地知道树是怎么产生能量的或人们如何利用这些能量,因而,下文会就此展开论述,故选B项。 主旨大意题。文章第一段就点明主题:如何利用树所产生的能量预防森林火灾,A项概括了文章的主旨。 2.C 3.A 4.B 5.D【要点综述】 本文是一篇资讯报道,主要讲述了“好奇号”机器人探索火星的最新情况。 根据第二段的“…after travelling through space for more than eight months.”可知答案。 根据第五段的“Curiosity also found smooth stones like the ones found on river beds and seashores on the earth, where their rough edges have been worn down by water.”可直接得出答案。 根据第五段可知,这些光滑的石头原先粗糙的边角会被磨平,就是因为水冲击的原因。石头不 根据第六段可知,如果有甲烷,就表示火星上有植物或动物存在的可能。但是“好奇号”到现在为止都没有在火星上找到甲烷,可见火星上至少现在是没有植物或动物的。 根据文章的第一段可知答案。
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