江苏省高三上学期12月英语试卷汇编:七选五专题.docx
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1、七选五专题江苏省南京市六校联合体2021届高三上学期12月联考试题第二节(共5小题;每小题2.5分,满分12.5分)阅读下面短文,从短文后的选项中选出可以填入空白处的最佳选项。选项中有两项为多 余选项。Its not secretour dependence on fossil fuels for energy has put an unbearable strain onthe environment. Alternative forms of energy, such as wind and solar power, are often either too inefficient or
2、too expensive to permanently replace conventional energy sources, such as coal and oil.36 This has led to solutions that some might consider unbelievable.Take the cactus (仙人掌)for example. Believe it or not, scientists have discovered that one cactus, called nopal, can be transformed into clean, rene
3、wable energy. 37 The gas the rotting cactus gives off can then power a generator that creates electricity. Whats more, nopal is cheap and easy to grow, and the pulp (果肉)can be used as fertilizer, leaving no waste at all!An even more common plant product that could be used as fuel is sugar. Researche
4、rs found that by processing sugar with water and certain proteins, you can create hydrogena majoralternative to gasoline. And sugar is easy to get. 3839 The bioluminescent Aequorea victoria jellyfish, for instance, produces a protein that, when applied to aluminum (车吕)and exposed to UV light, genera
5、tes a tiny amount of power. While it might not produce enough power to make a difference to the environment, it could still help heal people by powering microscopic devices used in advanced medicine. If the technology advances far enough, it could perhaps be used on a larger scale in the future.Just
6、 as the Aequorea victoria jellyfish produces a useful protein, human beings, too, produce something that can be used as a power sourcebody heat! When lots of people gather togetherin a mall or on a subway, all that body heat adds up and can be converted into power for homes and offices. 40 Some sele
7、cted buildings in London, Stockholm and Paris are running on people power.A.To create fuel, all you need to do is let the nopal rot.B.This has already been implemented in several cities.C. As a result, scientists have to really think outside the box.D. Sugar is the primary source of energy for every
8、 cell in the body.E. The future looks bright when we observe how creative humans can be.F. Besides the plant kingdom, the animal kingdom has plenty to offer, too.G.Thus, in the future, we may have to get used to putting it in our cars as well as in our coffee. 36-40 CAGFB江苏省 海门中学、姜堰中学、淮阴中学2021届12月联考
9、英语试题第二节(共5小题;每小题2.5分,满分12.5分)阅读下面短文,从短文后的选项中选出可以填入空白处的最佳选项。选项中有两项 为多余选项。Why is it that we always seem to pick the slowest line in a supermarket or store? Basically, the reason is simple: the chances are against us. To explain, imagine that you are in a store where there are three lines. 36 If there
10、are more lines, your chances of getting into the speediest queue are even less.Interestingly, some people have come up with theories and formulas to calculate this kind of thing. 37 A pioneering queuing theorist was an engineer named Erlang. He wanted to figure out the best number of telephone opera
11、tors to have at the telephone exchange in the early 1900s. Taking into consideration the average number of phone calls in an hour and the average call length, Erlang came up with formulas to determine the best number of operators that should be on duty at any given time. 38 On top of that, his work
12、established the basis for queuing theory, which became a new branch of mathematics.The theories first invented by Erlang are still used today in a variety of commercial settings, including call centers and traffic engineering. 39 While there are many options available regarding lining up, it appears
13、 that a snaking-line approach-where people stand in a single line and wait for the next available clerk-is the most efficient. 40 Research shows that this option is about three times faster than using separate lines, which is the approach that is most commonly used but not that efficient for anyone
14、in a rush.A. This is the method that most banks use.B. People who do this type of research are generally known as queuing theorists.C. His formula was soon accepted by telephone companies, including the British Post.D. You only have a one-in-three chance of picking the quickest line, so most likely
15、youll be wrong.E. The research he conducted even helps modern businesses provide satisfactory services to the public.F. Businesses know just the tricks for distracting their customers from the long lines they,re waiting in.G. Grocery stores try to have enough employees at checkout lines to get all c
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