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We have all been there. In a rush to leave the house we grab ou phone6 a head out of the door, realizing all too late that the battery is dead because we forgot 1oprog it into the table cloth. Or perhaps we have not. But this could be be future that scientists hope to explore with eletr6nic sheets that charge our Mobile phones, laptops and other equipment by harvesting energy from the world around us.
In a step in that direction, scientists at Massachusetts Institute of Technology ( MIT)have created super- thin,bendy materials that absorb wireless Internet and other electromagnetic waves in the air and turn them into electricity. The lead researcher, Tomas Palacios, said the breakthrough smoothed the way for energy- harvesting covers ranging from table cloths to giant packing for buildings that catch energy from the environment to power sensors and other electronics.
Palacios and his colleagues connected a bendy antenna(天线)to a flexible semiconductor(半导体)layer only three atoms thick. The antenna picks up wifi and other radio frequency signals and turns them into a current. This flows into a special semiconductor, where it is changed into a direct electrical current. Researchers have made energy-harvesting“rectennas ( rectifying antenna )”before,but existing equipment is made from conventional semiconductors which are inflexible, fragile and practically impossible to make in large sheets.
The wi-fi signals can fill an office with more than 100 microwatts of power that is ripe to be collected by energy-harvesting equipment. The MIT system has an efficiency (效率) of between 30% and 40%,producing about 40 microwatts when exposed to signals bearing 150microwatts of power in laboratory tests.“It doesn't. sound like much compared with the 60watts that a computer needs, but you can still do a lot with it,” Palacios said. “ You can design a wide range of sensors, for environmental monitoring or chemical and biological sensing, which operate at the single microwatt level.”
Medical equipment is another potential application. Because wi-fi and similar radio-frequency signals pass through people, energy-harvesting covers could be applied to implanted sensors to provide them with enough power to send out health data to an outside receiver.
32. What does the underlined word “it” in paragraph 1 refer to?
A. The phone B. The door.
C. The sheet .D. The table.
33. What is special about the new breakthrough?
A. It can harvest wi-fi energy.
B. It is super thin and flexible.
C It can power all the electronics
D. It smooths the way of receiving signals
34. What can be inferred from paragraph 4?
A The team will focus on improving efficiency of the new equipment.
B. A single device can harvest half of the energy in an office.
C. Palacios is pleased with the fie of the new。equipment.
D. Palacios will step into the field of chemistry.
35. What is the main idea of the last paragraph?
A. Another energy harvesting equipment.
B. The function of the health data receiver
C. Another potential application of the new equipment.
D. The way to implant the new equipment into the patient.
第二节(共5小题:每小题2分,满分10分)
相据短文内疼,必演文后的选项中选出能填人空白处的最佳选项,选现中有两项为多余选项。
While it may be difficult t0 find the time in a busy workday to try and eat healthily and stay on top of fitness goals, there are several simple ways you can help fight off belly(腹部)fat while at work:
●Avoid free food at work: A study found that 23 percent of working Americans eat food a work gt least once a week, which leads to an increase of 1,292 calories on average per Week.36______.That way you know exactly what you are eating and what ingredients (材料) you used to prepare the meal. You can better control your calorie intake, too.
●37_____ : Burst training at the office, defined as 30 to 60 seconds of all-out high-intensity exercise followed by one to two minutes of lower-intensity recovery, is one of the best ways to fight belly fat on the job. Try simple short burst exercises like a 60-second round of jumping jacks or running in place._ 38 , they are great places to perform burst training and get some fresh air, which is vital for mental health,
●Never skip breakfast: Eating breakfast is a characteristic common to successful weight-loss people and may be a factor in their success.39_____ , chances are solid that no weight-loss professional would ever encourage someone to skip breakfast.
●Drink water throughout the day: A study concluded that drinking water may promote weight loss in overweight dieting women. In addition to helping ward off belly fat, staying hydrated may prevent energy crashes and loss of mental focus.
Perhaps one of the most critical pieces of belly-fat fighting advice: Don't go more thanfour hours without eating._ 40_____ . That's no good.
A. Keep doing regular exercise
B. If you work near parks or hills
C. Do several rounds of“burst exercise" each day
D. When you eat something between lunch and dinner
E. Though here is some debate about eating breakfast
F. The best solution is to bring your own homemade lunch
G. Some people go six or more hours during the day without eating
第三部分语言知识运用(共两节, 满分45分)
第一节(共20小题:每小题1.5分,满分30分)
阅读下面短文,从短文后各题所给的A. B、C和ID四个选项中,选出可以填人空白处的最佳选项,并在答题卡上将该项涂黑。
Over the summer, one of my teenage son's high school classmates lived and worked in are mote country place. There she__ 41__ reliable Internet and phone service. Because it was__42__ to call or text his friend or reach her on social media, Will landed on an old-fashioned__43__ to stay in touch. Once a week, he tried to sit down and write a letter.
I haven't written a letter for years. When Will asked for writing materials to get_ 44__,I struggled to remember where we_ 45__ the paper and envelopes. But once we found the__46__ from a shelf and Will biked to the post office for__ 47__ , he settled into a spot near the living room window and set to work. As my son_ 48__ letters, I just spent time in another corner of the house __49__ some essays of one of the world's greatest__ 50__ writers, Virginia Woolf.
Woolf, who died in 1941, worried in her own time that as__51__ became cheaper and easier, people would__ 52__ less about what they were trying to say. They would__ 53__ the dream of letters that were“the__54 __of phrases and the arts of the writing master.”
The__ 55__ and emails we now dash off by the dozen each day seem the fulfillment of Woolf' s __56__ I'm not giving up my smart phone and laptop, and I'd be__ 57__ without the convenience of connecting with masses each day with a few quick keystrokes.
But my 17-year-old ___58__me this past summer that in an age of__59__ communication, conventional mail still has its__60___.
41.A. changed B. lacked C. found D. rented
42. A. polite B. unnecessary C. hard D. convenient
43. A. alternative B. value C. brand D. bike
44. A. continued B. touched C. offered D. started
45. A. put B. lost C. bought D. swapped
46. A. necessities B. ideas C. phones D. essays
47. A. mailboxes B. envelopes C. stamps D. postcode
48. A. sent B. read C. tore D. wrote
49. A. setting aside B. dipping into C. improving on D. getting rid of
50. A. lecture B. anecdote C. letter D. idiom
51. A. communication B. judgement C. commitment D. journey
52. A. consult B. know C. think D. quarrel
53. A. take up B. give up C. make up D. call up
54. A. exchange B. process C. review D. polish
55. A. excuses B. problems C. chances D. texts
56. A. suggestions B. ambitions C. fears D. dreams
57. A. betrayed B. lost C. charged D. misunderstood
58. A. warned B. prepared C. awarded D. reminded
59. A. unbearable B. expensive C. instant D. permanent
60. A. virtues B. disadvantages C. criteria D. independence
第I卷
第二节(共10小题; 每小题1.5分,满分15分)
阅读下面短文,在空白处填人1个适当的单词或括号内单词的正确形式。
In late April 2014, a violent storm swept through the southern United States, 61_______(destroy) more than $ 1 billion in property and killing 35 people. But a group of migratory(迁徙的) birds in eastern Tennessee sensed the oncoming mess and left long before the first clouds arrived. A year earlier, the team had tagged golden- winged warblers (莺) with leg trackers 62_______ ( study) their annual migrations to South America. Two days before the storms 63_______(strike),five golden-winged warblers slipped away, traveling nearly 700 kilometers south to the Florida coast.
It's the first time that the birds which normally migrate with the seasons 64_______(observe) to slip away when a big storm hits. The researchers suspect this 65 _______(behave)occurs only when the threat of injury outweighs the energy costs of a long trip. But nobody knows 66_______ the birds guessed the storm's severity and left so soon._ 67_______ ( puzzle) by it,the scientists initially reasoned that delicate changes in weather---atmospheric pressure,temperature, wind speed, cloud cover, or rainfall 一signaled the upcoming disaster. Yet when they checked weather records, none of these factors waved 68 _______(significant) before the storm. Instead, the team assumes that the approaching storms created 69______ disorder of infra—sounds low-frequency sound waves that birds can hear, 70 _________humans can't.
第四部分 写作(共两节, 满分35分)
第一节 短文改错(共10小题; 每小题1分, 满分10分)
假定英语课上老师要求同桌之间交换修改作文, 请你修改你同桌写的以下作文。文中共有10处语言错误, 每句中最多有两处。每处错误仅涉及一个单词的增加、 删除或修改。
增加: 在缺词处加一个漏字符号(∧), 并在其下面写出该加的词。
删除: 把多余的词用斜线(\)划掉。
修改: 在错的词下划一横线, 并在该词下面写出修改后的词。
注意: 1.每处错误及其修改均仅限一词;
2.只允许修改10处, 多者(从第11处起)不计分。
My senior high school life started as military training(军训). It was consisted of two parts:the theory exam and the physical training. which lasted about two weeks. The latter was much tough than the former. Dressed in green uniforms and exposing to the sun, we had to follow the soldier daily routine and go through hard training. Each morning, we had to getup and fold quilts rapid. We should finish our meals in limited time, too. Then I think it unbearable. Besides, now looking back, I find it necessary. It is the military training teaches me how to bear hardship and lead the better life.
第二节书面表达(满分 25分)
假定你是李华,近期你校要举行校运动会,请你写封邮件邀请在你市工作的英国朋友
Peter前来观看开幕式。内容包括:
1.发出邀请;
2.开幕式的时间与地点:
3.介绍其特点(如舞龙舞狮表演、中华武术表演等)。
注意:
1.词数100左右:
2.可以适当增加细节,以使行文连贯。
参考词汇: Chinese Wushu中国武术
相关链接
模拟考试作用有以下几点
第一,测试你的水平,让你知道自己所处的位置;
第二,模拟高考应试的整个过程,让同学们在临场心理上能够有所适应。从这种与高考非常相似的考试中,你能得到许多珍贵的体会。
模拟考试的目的是查漏补缺,对于学生来讲,考试是为了查缺补漏,发现自己的不足,然后进行针对性地学习和提高;对于家长来讲,考试的目的是为了帮助和引导孩子找出考试所暴露的问题,比如努力程度不够,学习方法不正确,学习习惯上存在问题,不会科学用脑学习效率不高等,最后使学生考取好成绩,超越自己。
考后,学生要做好总结。
一方面要认真审视各科成绩,看自己各个学科成绩是否均衡,判断哪个学科是自已的强科,哪个学科是自己的弱科,那些学科成绩说明自己发挥的正常,那些学科发挥得不太正常;二是要查找薄弱的原因,从基础知识掌握、解题思路和技巧的科学性等方面找出症结所在;三是要主动配合老师强化补弱措施。学生要回归课本,重新巩固基础知识,也是适应高考中低档次题目比例大的有效措施。
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新东方在线小编整理了历年高考试题及答案、高考分数线、高考作文、高考满分作文、2018高考录取分数线汇总 、2018高考录取投档线、2018高考一分一段分段表,供参考。
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上海 | 江苏 | 浙江 | 安徽 | 福建 | 江西 | 山东 | 河南 |
湖北 | 湖南 | 重庆 | 四川 | 贵州 | 云南 | 西藏 | 陕西 |
甘肃 | 青海 | 宁夏 | 新疆 | 广东 | 广西 | 海南 |
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