2019高考英语二轮复习专题限时训练专题2 阅读理解18.docx
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1、2018高考英语二轮复习专题限时训练(江苏专用)专题2阅读理解18(35分钟)ATemperature is measured by. means of a thermometer (温度计).One general form of thermometer depends upon the fact that most solids and liquids expand as their temperature rises. There are one or two exceptions. There is, for instance, a kind of steel called invar
2、 (from invariable ) which does not change its dimensions as temperature changes; it is valuable for making pendulums (钟摆),since, if the length of a pendulum changes, its time of vibration changes. It is also used for making very accurate measuring scales. In both cases, then, changes of atmospheric
3、temperature have no effect if invar is used.Another exception is that very odd liquid, water, which, has many strange properties (特性). As water gets colder it contracts (收缩),which is ordinary behavior, until it reaches the temperature of 30. above freezing point. After that, as it gets colder, it ex
4、pands. This is fortunatefor considering the freezing ofa pond. As the water on top gets colder, it shrinks; and so, volume for volume, it becomes heavier and sinks. This goes on until all the pond is at 30, but after that, as the water becomes colder it expands. Therefore the colder water stays on t
5、op and freezes, covering the pond with ice. If the water went on contracting down to the freezing point, the pond would become a solid block of ice in the end. This would not worry people who live in hot climates, but it would be very serious for those who live in cold climates, especially for those
6、 who want to break the ice and catch fish which live in ,the cold water beneath.1. Invar is valuable for making pendulums because .A. it can hardly change its shape or size as temperature changes.B. it will change its dimensions without the change of temperature.C. its time of vibration doesn, t cha
7、nge if its length changes.D. its time of vibration does not change if its length changes.2. As water gets colder after reaching the temperature of 30. it will .A. contractB. shrink C. expandD. freezeWhich of the following statements is true, according to thi.s passage?A. Only invar can be used to ma
8、ke a thermometer.B. Only water can be used to make a thermometer.C. Both invar and water can be used to make a thermometer.D. Neither invar nor water can be used to make a thermometer.3. The best title of this passage is most likely to be .A. Temperature MeasurementB. Two ExceptionsC. Uses of InvarD
9、. Properties of WaterBThese days no car show is complete without an electric car, and the 2018 North American International Auto Show in Detroit, US, which ran from January 10 to 23, was no exception.Among ,the fully electric vehicles on display were the Ford Focus Electric and the Honda Fit EV. BMW
10、 and Volvo also had prominent displays at the show, proving that they can produce practical, yet spacious family-oriented electric cars.Industry insiders at the show claimed that more efficient batteries, improved performance and greater consumer acceptance could make 2018 the “year of electric car”
11、 .It s long been clear that electric cars score heavily for convenience. They are, for instance, much easier to maintain than gasoline-powered cars. When the battery runs out, you simply .replace it or recharge it, just like you would for a cell phone or a laptop.This is also a much cheaper method t
12、han filling your tank with gasoline. Better yet, electric cars don t emit exhau.st fumes. As a result, they don t produce environmentally damaging greenhouse gases.It appears that improved technology is making electric cars and their maintenance much more user-friendly. So, what are the obstacles wh
13、ich are preventing electric cars from becoming popular and fashionable?Home charging for electric cars could be extremely convenient for users. However, it is also a potential obstacle. For a start, installing charging stations in owners homes will be a challenge, particularly for those who have to
14、park several blocks away from their homes.Also, charging the car s battery still takes quite, a long time. It may be some time yet before you can recharge an electnic car in the same time as you can refill your gas tank.Another problem is that many electric vehicles have limited ranges that may only
15、 allow for journeys of 50 miles (80 km) or less between charges. In cases where a driver wishes to charge the car primarily at home (perhaps overnight), this limits their daily driving to the range of their vehicle.This may be one reason why hybrid cars are now becoming more popular. A hybrid car ha
16、s more than one energy source, usually a traditional gasoline fuel tank and an electric battery. It s like a more practical version of an electric car: It s greener than a conventional vehicle, with fewer C02 emissions, yet it also doubles as a conventional vehicle.“I would say that hybrid is a tran
17、sition to fully electronic, “ Road and Track magazine editor Richard Horman told Detroit News during the show. The trend is for lighter, smarter, more economical cars. Of course, electronic vehicles are meant to be that way. ”This sounds promising, particularly in light o.f the fact that the show fe
18、atured more electric cars from big manufacturers than ever before.However, it seems that the technology associated with electric cars is not yet able to fully meet people, s expectations. Don t expect gasoline-powered cars to disappear from, roads just yet.4. What made electric cars m.ore convenient
19、?A. Easier maintenance.B. High scores on the show.C. Practicality and large space.D. Much lower prices.5. Which of the following could NOT act as a potential obstacle of electric cars?A. It is rough work to install charging stations at home.B. It is time-consuming to charge the batteries.C. The rang
20、es between charges are limited.D. There, s no need to fill the tank with petrol.6. In Paragraph 10, the underlined word “hybrid” is probably closest in meaning to.A. gasoline B. electricC. combined D. separatedThe writer s purpose in writing this passage is to.A. introduce the 2018 Auto Show in US B
21、. get readers informed of electric carsC. comment on different types of cars D. advertise for electric carsCOne Day Tour: Great Wall & Summer PalaceOverview: You will visit the famous Badaling Great Wall and Summer Palace in one day.Tour Description and Itinerary (行程)One day Private Tour or Coach To
22、ur: Depart everydayStart from 8:30 am to around 6:00 pm, flexible schedule for private tour. Itinerary:Pick you up from hotel on departure time, then drive to the famous Badaling Great Wall, which is 60 miles away from downtown about one and a half hour driving. Sightseeing on Great Wall Badaling se
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