届新高考英语一轮复习七选五专项训练2科教科普类.docx

1、届新高考英语一轮复习七选五专项训练2科教科普类2021届新高考英语一轮复习七选五专项训练（2）科教科普类1.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。 We all do it : texting while walking or chatting on the phone while cooking dinner. In todays society,doing just more than one thing at a time seems very common. But research shows that we had better stop

2、 multitasking. _ Its slowing you down._ In fact,it will probably take you longer to finish two projects when youre jumping back and forth than it would to finish each one separately. The same is true even of driving: drivers take longer to reach their destinations when chatting on cellphones. In a w

3、ord, switching between tasks leads to a loss in productivity._ The human brain can handle two complicated tasks without too much trouble. Add a third task,however, and it can cause you to introduce errors whatever youre working on, especially if one or more of your activities involve much critical(批

4、判性的) thinking. Its stressing you out. Researchers found employees who received a steady stream of office email stayed in a high alert(戒备状态) mode with higher heart rates. Its not only the physical act of multitasking that causes stress._ If you do poorly on an exam because you study while watching ma

5、tches on TV, that can certainly bring a lot of stress. It can be dangerous. Texting or talking on a cellphone while driving is as dangerous as driving drunk._ People who use mobile devices while walking are less likely to look before stepping into a crosswalk. And in one study, one in five teenagers

6、 who went to the emergency room after a car accident admitted they were using a smart phone at the time of the accident.A.Youre making mistakes.B.Its the consequences, as well.C.Then how to avoid multitasking?D.Why should you stop multitasking now?E.Multitasking does harm to your critical thinking.F

7、.Not just using a phone while driving puts you at risk.G.Contrary to popular belief, multitasking doesnt save time.2.根据短文内容,从短文后的选项中选出能填人空白处的最佳选项,选项中有两项为多余选项。 Whether youd like to loosen tight muscles, become more flexible, or just keep yourself tom getting injured when you exercise or play sports,

8、stretching is important. With just a few minutes of gentle stretching, you can reduce the pain that comes from tight muscles, improve your posture, and increase your range of motion._With all these benefits, why not give stretching a try?1. Hamstring(脚筋)(or Back-of-the-leg) StretchThe hamstring musc

9、le runs down the back of your upper leg. Tightness in this muscle can lead to serious back pain, so its an important one to stretch._Working one leg at a time, ft your leg and rest the heel on the wall with your leg slightly bent. Gently straighten your leg until you feel a nice stretch. Pause there

10、 and wait. Then switch legs.2._Tight shoulder muscles can lead to neck and back pain as well as other problems. Its important to keep these muscles flexible. You can raise straight overhead, then bend the elbow so that your right hand falls behind your head. Using your left hand, gently pull your ri

11、ght elbow toward the centerline of your body. Ideally, you want your right forearm to be straight up and town. Be sure to keep your head and neck straight, and dont let your right arm force the head down or forward in any way._.3. Neck StretchThis is very important for drivers! Stretch your neck one

12、 side at a time, beginning with the right. Tip your head to the left._Do not pull hard. The neck is fragile, so you must be gentle with this stretch. Repeat on the opposite side. A. Arm Stretch.B. Shoulder StretchC. Switch arms and repeat.D. Stand about an arms length away from a table.E. Stretching

13、 also improves your balance and coordination.F. For a gentle stretch, lie on the floor near a doorway or wall corner. G. And use your left hand to very gently pull your head toward the front of your left shoulder.3.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。Curling(冰壶) is a winter sport played on ice.

14、 Therefore, its most popular in northern countries like Canada. Curling is played in the USA by about 15,000 people._Scottish winters were long and there were forms of entertainment. So people began making a sport out of sliding heavy stones on the frozen lakes. The game spread, and in the 1700s cur

15、ling clubs formed. Then Scottish soldiers brought it to North America._Men, women, and children often compete on the same team, if they can slide a forty-pound stone down the ice! Both teams slide their stones toward the same goal. After all 16 stones have been cast, the team whose stone has slid cl

16、osest to the goal gets one point._The ice is so smooth and the stone is so heavy that even the smallest misjudgment in a throw can make the stone slide much too far or stop too suddenly. _Water helps the stone slide, but it can also change the stones path.In curling, a broom is part of each players

17、equipment. A good curler must know how much force to use. The player must know the exact conditions of the ice on the court._That may explain why the international Olympic Committee decided to make curling an Olympic sport in 1998.A. Players compete on the court.B. Then the play begins in the other

18、direction.C. Curling is played by teams of four people.D. In other words, a good curler must be a fine athlete.E. The rules are easy to learn, but playing the game is hard.F. The melting of the ice makes things tough for the curlers.G. Curling probably began in Scotland in the 1500s or earlier.4.根据短

19、文内容,从短文后的七个选项中选出正确的填入空白处。选项中有两项为多余选项。 The Science of Risk-Seeking Sometimes we decide that a little unnecessary danger is worth it because when we weigh the risk and the reward, the risk seems worth taking. _Some of us enjoy activities that would surprise and scare the rest of us. Why? Experts say i

20、t may have to do with how our brains work. The reason why any of us take any risks at all might have to do with early humans. Risk-takers were better at hunting, fighting, or exploring._As the quality of Risk-taking was passed from on ration to the next, humans ended up with a sense of adventure and

21、 a tolerance for risk. So why arent we all jumping out of airplanes then? Well, even 200,000 years ago, too much risk-taking could get one Killed. A few daring survived, though, along with a few stay-in-the-cave types. As a result, humans developed a range of character types that still exists today.

22、 So maybe you love car racing, or maybe you hate it. _ No matter where you are on the risk-seeking range, scientists say that your willingness to take risks increases during your teenage years._;To help you do that, your brain increases your hunger for new experiences. New experiences often mean tak

23、ing some risks, so your brain raises your tolerance for risk as well. Mean taking some risks, so your brain raisers your tolerance for risk as well._ For the risk-seekers a part of the brain related to pleasure becomes active, while for the rest of us, a part of the brain related to fear becomes act

24、ive. As experts continue to study the science of risk-seeking, well continue to hit the mountains, the waves or the shallow end of the pool.A. It all depends on your character.B. Those are the risks you should jump to take.C. Being better at those things meant a greater chance of survival.D. Thus, t

25、hese well-equipped people survived because they were the fittest.E. This is when you start to move away from your family and into the bigger world.F. However, we are not all using the same reference standard to weigh risks and rewards.G. New brain research suggests our brains work differently when w

26、e face a nervous situation.5.根据短文内容,从短文后的七个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.Male frogs use territorial calls to warn off frogs that are entering their territory._ So they do not waste energy by making territorial calls when they detect those frogs near their territory. However, if an unknown frog approa

27、ches the land they claim as their own, males will aggressively let out a territorial call. _.Warning calls are employed to warn other frogs of some nearby danger and are commonly heard when an attacker comes near. _. If an attacker attacks a frog, the frog will make a call almost like a scream, whic

28、h is intended to scare the attacker. This scream is almost always made when the attacker succeeds in grasping the frog because, should it be greatly surprised, the attacker may release the frog, which might permit the animal to make its escape._, which is employed when another frog is caught hold of

29、 by mistake. This regularly happens during the mating season, when male frogs eager for a mate wrongly grasp another male. In other cases, females that have already mated may make this call when different male frogs catch them. _.Whenever a male catches a female of another species, the female gives

30、the release call to inform the male that he has made a mistake and should let go.A.Frog calls further differ between speciesB.The final major call made by frogs is the release callC.To the human ear, frog mating calls may all sound similarD.Frogs make short, sharp, loud sounds while they hurry awayE

31、.Males can recognize the calls their neighbors make from afarF.If the strange frog does not leave immediately, it may be attackedG.There are some special occasions when frogs belonging to different species mix with one another6.根据短文内容,从短文后的七个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。The Art of Slow ReadingIf you are reading this article in print, chances are that you will only get through half of what I have written. And if you are reading this online, you may not even finish a fifth. _They suggest that many of us no