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题型:阅读理解 题类:常考题 难易度:普通

陕西省榆林市第一中学2016-2017学年高二下学期英语期末考试试卷

阅读理解

    Mya Le Thai is a scientist studying at the University of California, Irvine. She recently discovered a process that may result in batteries that last forever. Thai said she had been discouraged that the batteries for her wireless devices degrade. Over time, they fail to charge fully.

    Thai did not like to have keep her wireless laptop connected to an electrical outlet. She decided to do something about that problem.

    At first, she and her team thought about inventing a new battery. But as they experimented, Thai discovered something that might permit lithium-ion(锂离子) batteries to last forever. Lithium-ion batteries power most wireless devices. Over time, the batteries lose the ability to hold a charge. Most of these batteries have a life span of about 7,000 charging cycles before they die.

    One of the reasons lithium-ion batteries degrade is their use of nanowires(纳米线) to carry electricity. Nanowires are extremely thin. A human hair is thousands of times thicker, for example. Nanowires are extremely efficient carriers of electricity, which makes them useful in batteries. But Thai said their thinness also makes them weak. "Nanowires break over time," she said. "That's why they lose capacity."

    But, Thai had a theory: The nanowires might last longer if covered with a material. She and the team tested her theory. The team tried many coverings for the wires. PMMA was one of them. The nanowires were coated with PMMA and cycled through charges 200,000 times. The PMMA coated nanowires showed no evidence of damage. The results suggest that batteries could last forever, without losing charging ability.

    Thai hopes to continue her research to understand why this material works so well and to see if any other material could create better results.

"It's kind of cool," she said. "I'm really glad people are showing interest in my work and not just in the work itself, but also in technology and energy."

(1)、What caused Thai to do research on the batteries?
A、Weak power of the batteries B、Her preference for batteries C、Inconvenient use of batteries D、Her habit to use her computer
(2)、What's the disadvantage of lithium-ion batteries?
A、They have a certain service life B、They need charging very often C、They are not quite dependable D、They are easy to break down
(3)、Why did Thai try covering the nanowires with a certain material?
A、To make them thicker B、To carry more electricity C、To make them safer to use D、To protect them from being damaged
(4)、What can be a suitable title for the text?
A、All Batteries Would Be Replaced By Long-Last Ones B、Lithium-ion Batteries Might Come to an End C、Batteries That Last Forever Could Be Near D、Batteries Would Work Without Recharging
举一反三
阅读理解

    As a Fulbright(富布莱特法案基金)scholar at Yale, I wanted very much to get some individual help from some famous professors, but their office-hours were only once a week and there were always students waiting outside. At first, I was too polite to get their help. Then I realized that Chinese politeness does not work in this society. I needed to be aggressive to get what I wanted. I also noticed that Chinese students or Asian students were very polite in class while American students often interrupted the professor, asking questions and dominating the discussion. The Chinese students were not as aggressive as American students.

    I was impressed by the role of the professor in the class. The professor didn't act as an authority, giving final conclusions, but as a researcher looking for answers to questions together with the students. One linguistic feature of his interacting with his students was that he used many modal verbs-far more than I did in Beiwai. When answering questions, he usually said: “this is my personal opinion and it could be wrong. It would be a good idea if you could read the book I mentioned the other day.” Or,“ You may find the book I recommended helpful.” Or,“You could be right, but you might find this point of view also interesting.” When making comments on students' performances, the professor usually said:” It might have been much clearer if you had taken in some of the ideas we discussed earlier this semester.”

    In China, authorities are always supposed to give wise decisions and correct directions. Therefore students always expect the professor to give an answer to the question. I still remember how annoyed they were when foreign teachers did not provide such an answer. Their expectations from authorities are much higher than those of American students. Once the Chinese students got the answer, they were sure about it. That is why they make far more certain statement than American students. That is why Chinese students find it difficult to use modal verbs because the function of modal verbs is to provide room for negotiation and different ideas.

阅读理解

    Palaces are known for their beauty and splendor, but they offer little protection against attacks. It is easy to defend a fortress (堡垒),but fortresses are not designed with the comfort of a king or queen in mind. When it comes to structures that are both majestic and well-defended, the classic European castle is the best example of design. Across the ages castles changed, developed, and eventually fell out of use, but they still command the fascination of our culture.

    Castles were originally built in England by Norman invaders. In 1066. As William the Conqueror advanced through England, he defended key positions to secure the land he had taken. The castles he built allowed the Norman lords to draw back to safety when threatened by English rebellion. Castles also served as bases of operation for offensive attacks. Troops were summoned to(召集), organized around, and deployed (部署) from castles. In this way castles served both offensive and defensive roles in military operations.

    Not limited to military purposes, castles also served as offices from which the lord would administer control over his kingdom. That is to say, the lord of the land would hold court in his castle. Those that were socially beneath the lord would come to report the affairs of the lands that they governed and pay tribute to the lord. They would address conflicts, handle business, feast, and enjoy festivities, In this way castles served as important social centers in medieval England. Castles also served as symbols of power. Built on important and noticeable sites overlooking the surrounding areas, castles constantly appeared in the background of many peasants' lives and served as a daily reminder of the lords strength.

    Now, castles no longer serve their original purposes. However, the remaining castles receive millions of visitors each year from those who wish to experience the glory of a time long passed.

阅读理解

    The dream to travel the world has always been in the mind of many. The national geographic and Discovery Channel videos are just not enough. You can only feel the excitement of experiencing all those fascinating wildlife, countryside or adventure tourism documentaries by traveling the world. Here are the best destination countries based on safety, culture, ease of transportation, and accommodation for single travelers in 2018.

    Bali Island, Indonesia

    The cheapest of all countries to visit. Living in a comfortable room, having three meals a day and a few beers for only 25 dollars per day! Accommodation and goods are cheap everywhere, especially when you move further to the north.

    Italy

    Lined with olive trees, hilltop towns, and wonderful beaches, Italy is one of the most sought-after destinations; Not forgetting the wine and wine-cooked barbecues. All the cities of Italy are always full of tourists all year around.

    Vietnam

    Vietnam suburbs or the city of Hanoi is just where you need to be. Amazing landscapes, friendly locals, cheap food and affordable services, Cab services are a mere 10 dollars or less compared to cab services in the States which can get as high as 30 dollars for a couple of blocks away.

    France

    You don't talk of France without mentioning Eiffel tower. At night, it gives the most incredible view of France. Avoid the long lines to the tower and book your trip earlier For Catholics or historians, the Notre Dame and its surroundings will attract you with its ancient mummified (制成木乃伊的) cats, while Les Invalids military museum has all types of the world war weapons.

阅读理解

    There is such a group of singers in the western musical circle at present, who enter the business as online celebrities(名人)and then become top idols and giant stars globally. They become popular for their videos online and then they are discovered by talent agents and gradually cause huge storms in the musical circle. For example, Troye Sivan, a singer who is nicknamed "chuoye", became popular on You tube from an early age.

    As a popular video sharing website, You Tube has given rise to plenty of stars, creating a new celebrity culture. Providing a platform where anyone can post videos. You tube presents the opportunity for anyone to achieve fame by simply uploading a short video. Sivan has been making you tube videos since he was 12 to show his singing talent. In the digital age, Sivan has already developed large devoted audience online and his sensitive video blogs have earned him extreme popularity.

    A. survey has showed that US teenagers are more attracted with You Tube stars, which is a surprising result. You Tube stars are judged to be more attractive, outstanding and related than traditional stars. Looking at the survey comments and feedback, teens enjoy a close and real experience with You Tube celebrities, who aren't carefully directed by design. Teens also say they appreciate YouTube stars sense of humor and risk-taking spirit, which are often limited by Hollywood stars. As a result, singers who make their first show in the traditional way no longer have a complete advantage in front of the audience. Online platforms open up a lot of doors for people. They become the best place to be discovered.

阅读理解

Keeping secrets is a burden

    "Don't tell anyone". We hear these words when someone tells a secret to us. But it can be hard to keep a secret. We're often tempted to "spill the beans(说漏嘴)",even if we regret it later.

    According to Asim Shah, professor in the Menninger Department of Psychiatry and Behavioral Sciences at Baylor College of Medicine, US, keeping a secret may well "become a burden". This is because people often have an "obsessive and anxious urge to share it with someone".

    An earlier study, led by Anita E. Kelly, a scientist at the University of Notre Dame, US, suggested that keeping a secret could cause stress. People entrusted(受委托 ) with secrets can suffer from depression, anxiety, and body aches, reported the Daily Mail.

    But with secrets so often getting out, why do people share them at all? Shah explained that people often feel that it will help them keep a person as a friend. Another reason people share secrets is guilt over keeping it from someone close to them. A sense of distrust can develop when people who are close do not share it with each other. "Keeping or sharing secrets often puts people in a position of either gaining or losing the trust of someone," according to Shah.

    He added that talkative people could let secrets slip out (泄露).But this doesn't mean that it is a good idea only to share secrets with quiet people. A quiet person may be someone who keeps everything inside. To tell such a person a secret may cause them stress, and make them talk about the secret. Shah said that to judge whether to tell someone a secret.

    Shah said that to judge whether to tell someone a secret, you'd better put yourself in their position. Think about how you would feel to be told that you mustn't give the information away. Shah also recommended that if you accidentally give up someone's secret you should come clean about it. Let the person know that their secret isn't so secret anymore.

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