1、Unit 6 能力提升2021-2022学年高二英语外研版(2019)选择性必修二单元测试卷本试卷满分120分,考试时间100分钟。第一部分 阅读（共两节,满分50分）第一节 （共15小题;每小题2.5分,满分37.5分）阅读下列短文,从每题所给的A,B,C,D四个选项中选出最佳选项。AA great way to protect yourself from getting infected by COVID-19 is to get a high quality face mask that can better filtrate(过滤)some viruses, bacteria, and
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9、n people and plants has long been the subject of scientific research. Recent studies have found positive effects. A study conducted in Youngstown, Ohio, for example, discovered that greener areas of the city experienced less crime. In another, employees were shown to be 15% more productive when thei
10、r workplaces were decorated with houseplants. The engineers at the Massachusetts Institute of Technology (MIT) have taken it a step further changing the actual composition of plants in order to get them to perform diverse, even unusual functions. These include plants that have sensors printed onto t
11、heir leaves to show when theyre short of water and a plant that can detect harmful chemicals in groundwater. Were thinking about how we can engineer plants to replace functions of the things that we use every day, explained Michael Strano, a professor of chemical engineering at MIT. One of his lates
12、t projects has been to make plants glow(发光) in experiments using some common vegetables. Stranos team found that they could create a faint light for three-and-a-half hours. The light, about one-thousandth of the amount needed to read by, is just a start. The technology, Strano said, could one day be
13、 used to light the rooms or even to turn trees into self-powered street lamps. In the future, the team hopes to develop a version of the technology that can be sprayed onto plant leaves in a one-off treatment that would last the plants lifetime. The engineers are also trying to develop an on and off
14、 switch where the glow would fade when exposed to daylight. Lighting accounts for about 1% of the total electricity consumed in the US. Since lighting is often far removed from the power source (电源)such as the distance from a power plant to street lamps on a remote highwaya lot of energy is lost dur
15、ing transmission (传输). Glowing plants could reduce this distance and therefore help save energy.1.What is the first paragraph mainly about?A.A new study of different plants.B.A big fall in crime rates.C.Employees from various workplaces.D.Benefits from green plants.2.What is the function of the sens
16、ors printed on plant leaves by MIT engineers?A.To detect plants lack of water.B.To change compositions of plants.C.To make the life of plants longer.D.To test chemicals in plants.3.What can we expect of the glowing plants in the future?A.They will speed up energy production.B.They may transmit elect
17、ricity to the home.C.They might help reduce energy consumption.D.They could take the place of power plants.4.Which of the following can be the best title for the text?A.Can we grow more glowing plants?B.How do we live with glowing plants?C.Could glowing plants replace lamps?D.How are glowing plants
18、made pollution-free?C Alice Moore is a teenager entrepreneur (创业者), who in May 2015 set up her business AilieCandy. By the time she was 13, her company was worth millions of dollars with the invention of a super-sweet treat that could save kids teeth, instead of destroying them. It all began when Mo
19、ore visited a bank with her dad. On the outing, she was offered a candy bar. However, her dad reminded her that sugary treats were bad for her teeth. But Moore was sick of missing out on candies. So she desired to get round the warning. Why cant I make a healthy candy thats good for my teeth so that
20、 my parents cant say no to it? With that in mind, Moore asked her dad if she could start her own candy company. He recommended that she do some research and talk to dentists about what a healthier candy would contain. With her dads permission, she spent the next two years researching online and cond
21、ucting trials to get a recipe that was both tasty and tooth-friendly. She also approached dentists to learn more about teeth cleaning. Consequently, she succeeded in making a kind of candy only using natural sweeteners, which can reduce oral bacteria. Moore then used her savings to get her business
22、off the ground. Afterwards, she and her father secured their first business meeting with a supermarket owner, who finally agreed to sell Moores product CanCandy. As CanCandys success grows, so does Moores credibility as a young entrepreneur. Moore is enthusiastic about the candy she created, and she
23、s also positive about what the future might bring. She hopes that every kid can have a clean mouth and a broad smile. Meanwhile, with her parents help, Moore is generally able to live a normal teenage life. Although she founded her company early on in life, she wasnt driven primarily by profit. Moor
24、e wants to use her unique talent to help others find their smiles. She donates 10% of AilieCandys profits to Big Smiles. With her talent and determination, it appears that the sky could be the limit for Alice Moore.1.How did Moore react to her dads warning?A.She argued with him.B.She tried to find a
25、 way out.C.She paid no attention.D.She chose to consult dentists.2.What is special about CanCandy?A.It is beneficial to dental health.B.It is free of sweeteners.C.It is sweeter than other candies.D.It is produced to a dentists recipe.3.What does Moore expect from her business?A.To earn more money.B.
26、To help others find smiles.C.To make herself stand out.D.To beat other candy companies.4.What can we learn from Alice Moores story?A.Fame is a great thirst of the young.B.A youth is to be regarded with respect.C.Positive thinking and action result in success.D.Success means getting personal desires
27、satisfied.D For those who can stomach it, working out before breakfast may be more beneficial for health than eating first, according to a study of meal timing and physical activity. Athletes and scientists have long known that meal timing affects performance. However, far less has been known about
28、how meal timing and exercise might affect general health. To find out, British scientists conducted a study. They first found 10 overweight and inactive but otherwise healthy young men, whose lifestyles are, for better and worse, representative of those of most of us. They tested the mens fitness an
29、d resting metabolic(新陈代谢的) rates and took samples (样品) of their blood and fat tissue. Then, on two separate morning visits to the scientists lab, each man walked for an hour at an average speed that, in theory, should allow his body to rely mainly on fat for fuel. Before one of these workouts, the m
30、en skipped breakfast, meaning that they exercised on a completely empty stomach after a long overnight fast(禁食). On the other occasion, they ate a rich morning meal about two hours before they started walking. Just before and an hour after each workout, the scientists took additional samples of the
31、mens blood and fat tissue. Then they compared the samples. There were considerable differences. Most obviously, the men displayed lower blood sugar levels at the start of their workouts when they had skipped breakfast than when they had eaten. As a result, they burned more fat during walks on an emp
32、ty stomach than when they had eaten first. On the other hand, they burned slightly more calories(卡路里), on average, during the workout after breakfast than after fasting. But it was the effects deep within the fat cells that may have been the most significant, the researchers found. Multiple genes be
33、haved differently, depending on whether someone had eaten or not before walking. Many of these genes produce proteins (蛋白质) that can improve blood sugar regulation and insulin (胰岛素) levels throughout the body and so are associated with improved metabolic health. These genes were much more active whe
34、n the men had fasted before exercise than when they had breakfasted. The implication of these results is that to gain the greatest health benefits from exercise, it may be wise to skip eating first.1.The underlined expression stomach it in Paragraph 1 most probably means _.A.digest the meal easilyB.
35、manage without breakfastC.decide wisely what to eatD.eat whatever is offered2.Why were the 10 people chosen for the experiment?A.Their lifestyles were typical of ordinary people.B.Their lack of exercise led to overweight.C.They could walk at an average speed.D.They had slow metabolic rates.3.What ha
36、ppened to those who ate breakfast before exercise?A.They successfully lost weight.B.They consumed a bit more calories.C.They burned more fat on average.D.They displayed higher insulin levels.4.What could be learned from the research?A.A workout after breakfast improves gene performances.B.Too much w
37、orkout often slows metabolic rates.C.Lifestyle is not as important as morning exercise.D.Physical exercise before breakfast is better for health.第二节 （共5小题;每小题2.5分,满分12.5分）根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。 Nearly everyone has spent at least one night lying in bed wishing for sleep. But for ma
38、ny, its a nightly struggle. The key, or the secret, is to experiment. What works for some might not work as well for others. _ Set a regular bedtime. Go to bed at the same time every night._ Try not to break this routine on weekends when it may be attractive to stay up late. If you want to change yo
39、ur bedtime, help your body adapt._ If you get enough sleep, you should wake up on time naturally without an alarm. As your bedtime, try to keep your regular wake-up time even on weekends. Be smart about napping. While taking a nap can be a great way to recharge ones batteries, especially for the eld
40、erly, it can make insomnia(失眠) worse._If you must nap, do it in the early afternoon, and limit it to thirty minutes. Fight after-dinner drowsiness. What should you do when you are getting sleepy before your bedtime?_For example, washing the dishes, or calling a friend. If you give in to the drowsine
41、ss, you may wake up later in the night and have trouble getting back to sleep.A.Wake up at the same time every day.B.Spend more time outside in the daytime.C.When its time to sleep, make sure the room is dark.D.If insomnia is a problem for you, consider giving up napping.E.Its important to find the
42、sleeping habits that work best for you.F.Get off the couch and do something to avoid falling asleep.G.Choose a time when you normally feel tired so that you can fall asleep easily.第二部分 语言运用（共两节,满分30分）第一节 （共15小题;每小题1分,满分15分） It was an extremely hot spring day. A thunderstorm had passed over and the c
43、louds were clearing and the sun had returned. Steam was coming off the 1 sidewalk as I parked my car. I 2 into the local store to buy my son a shirt. The air conditioning there was a welcome 3 from the heat outside. Having made my 4 , I walked back into the heat. I got into my car but had to wait to
44、5 because all the cars lined up at the red stop light. I looked out of my car window and saw something on the pavement. A single butterfly was 6 fluttering (拍动) its wings but not getting off the ground. It was right in front of a trucks tire too. Without a second thought, I got out of my car, 7 my h
45、and so the truck driver wouldnt move 8, and then bent down to look at the butterfly. One of its legs was 9 in what looked like spilt soda. I reached down and 10 the butterfly in my hands 11. I lifted its leg up and suddenly it was 12. I opened my hands and it flew towards the shining sun. My own eye
46、s shined brighter and my own heartfelt 13 as I watched it. Lots of people might wonder why I would step out into traffic like that to 14 a single butterfly. All I can say is that my heart was 15 me at that moment.1. A. dryB. straightC. wetD. broad2. A. droveB. brokeC. headedD. jumped3. A. gestureB.
47、reactionC. greetingD. relief4. A. purchaseB. decisionC. mindD. day5. A. pull inB. speed upC. pull outD. check out6. A. happilyB. softlyC. desperatelyD. casually7. A. reached outB. held upC. lay downD. put down8. A. backwardsB. sidewaysC. aroundD. forwards9. A. stuckB. placedC. fastenedD. fitted10. A. pushedB. cuppedC. seizedD. dropped11. A. tightlyB. forcefullyC. quicklyD. gently12. A. freeB. awakeC. blankD. dizzy13. A. prouderB. lighterC. so
