2023北京初三二模英语汇编:阅读单选CD篇.docx
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1、2023北京初三二模英语汇编阅读单选CD篇(2023 北京西城 统考二模)Water lovers will tell you that not all water tastes the same. However, if your water tastes different when its in a reusable plastic bottle, a new study finds it may be a cause fbr worry.Two scientists, Jan Christensen and Selina Tisler, have undertaken a study
2、about which chemicals (化学物质) in reusable plastic bottles go into the water. They let water sit fbr 24 hours in new bottles, in used bottles and in bottles that had just come out of a dishwashing machine. After that, they compared what they found in the water in the different bottles.The results were
3、 quite a surprise. More than 400 difierent chemicals had leached (析出) from new plastic bottles into the water. Water stored in used plastic bottles had the highest levels of plastic-related chemicals. Running the bottles through a dishwasher worsened the leaching. After a single washing, more than 3
4、, 500 difierent chemicals ended up in a bottles water. Many of these were related to dishwasher soap (洗碗皂) and remained even after a second washing with running water. Whats more, dishwashing itself also caused more plastic chemicals to leach.Similar discoveries were also made by Pat Hunt, a biologi
5、st at Washington State University. She found that heat can cause chemicals to move out of plastics. Hot water in a dishwasher helps to clean dishes. But plastics can start to break down if they are in hot water repeatedly, nPlastics just shouldnt go in the dishwasher,n she concludes.Christensen and
6、Tisler5s study found some chemicals that are probably harmful. Future studies could make clear how much of each chemical is there. And thafs important. Just because a chemical is in the water doesnt mean it will cause problems. Much of the risk will depend on how much of a chemical actually gets int
7、o the body.Hunt agrees. nThis study is a starting point, n she says. It gives researchers ideas about what chemicals from reusable bottles are probably in water. But it doesnt tell us what risks the now-polluted water may bring to us. More research is needed.Still, lowering exposures (接触)to plastic-
8、related chemicals is probably a good idea. Hunt suggests using non-plastic bottles. nIf you do use a plastic bottle, fill it up and use it right away, n Tisler adds. Its best not to store water in them overnight or fbr long periods of time.” 1. What can we learn from the passage?A. The length of tim
9、e water is kept in plastics matters.B. Water in new plastic bottles has the most chemicals.C. Drinking hot water in plastic bottles harms peoples health.D. Over 3, 500 plastic chemicals are found in dishwashed bottles.2. According to the passage, further research is needed to find out.A. whether che
10、micals actually enter the bodyB. how plastic-related chemicals get into waterC. what risks plastic-related chemicals may causeD. when people should throw away a plastic bottle 3. What is this passage mainly about?A. Improper usage of plastic bottles.参考答案1. A8. C15. I22.C29. C2.C 3. D 4. B 5. B 6. A
11、7. C9. D 10. D 11. C 12. B 13. D)16. C 17. B 18. A 19. D23.C24.B25.C26.B27.A14. A20. C 21. B28.A35.A30.B31.B32. D33.C34.AB. Various opinions about plastic bottles.C. Unknown chemicals in plastic bottles.D. Research findings about plastic bottles.Extrinsic(2023 北京西城 统考二模)Why do we do the things we do
12、? What drives our behavior? Psychologists have suggested different ways of thinking about motivation (动机),including looking at whether motivation arises from outside (extrinsic) or inside (intrinsic) a person.Researchers have found that each type has a different effect on a persons behavior and effo
13、rts to achieve goals. To better understand the influence of intrinsicand extrinsic motivation on human behavior, it would help to learn how each type works.Extrinsic motivation is when you are motivated to perform a behavior or take part in an activity because you want to get a reward (奖赏)or avoid p
14、unishment. You will take action not because you enjoy it, but because you expect to get something in return or avoid something unpleasant.Intrinsic motivation is when you decide to do something because you find it satisfying. You are performing an activity for what it is not because you are after so
15、me external (夕卜部的)reward. The behavior itself is its own reward.Studies have shown that offering too many external rewards fbr an already internally rewarding behavior can reduce intrinsic motivationwhich is known as the over justification (奖励过当)effect. For example, in a 2008 study, children who wer
16、e rewarded for playing with a toy they had already expressed interest in playing with became less interested in the toy after being externally rewarded.This is not to suggest that extrinsic motivation is a bad thingit can be beneficial in some situations. For example, extrinsic motivation can be esp
17、ecially helpful when a person needs to complete a task that they find unpleasant.Most people would accept that intrinsic motivation is best, but it is not always possible in every situation. Sometimes a person simply has no internal wish to join in an activity.Both extrinsic and intrinsic motivation
18、 play a key role in learning. Experts have argued that educations traditional stress on external rewards (such as grades, report cards, and gold stars) undermines any intrinsic motivation that students might already have. However, others have suggested that extrinsic motivators can help students fee
19、l more knowledgeable in the classroom, which in turn builds up their intrinsic motivation.As professor David Myers put it, a persons interest often survives when a reward is used neither to bribe (贿 赂)nor to control but to show a job well done, as in a most improved player“ award. Put simply, reward
20、s, rightly given, can increase enjoyment and motivate high performance.Understanding how each type of motivation works and when it is likely to be useful can help people perfonn tasks and improve their learning.4. You do something out of intrinsic motivation when you.A. do schoolwork to get a good g
21、radeB. work on a subject you find interestingC. take part in a sport to receive recognitionD. clean your room to avoid criticism from your parents5. Why does the writer mention the 2008 study in Paragraph 5?A. To explain the benefits of offering toys as rewards.B. To prove external rewards can influ
22、ence ones interest.C. To introduce how intrinsic motivation works in children.D. To stress the importance of understanding intrinsic motivation.6. The word undermines in Paragraph 8 means.A. weakens B. separates C. improves D. encourages7. The writer probably agrees that.A. extrinsic motivation is k
23、ey to ones achievementB. intrinsic motivation has little to do with enjoying a taskC. properly-given rewards can encourage further improvementD. offering rewards of any kind takes the fun out of an activity(2023 北京海淀 统考二模)Most kids know its wrong to shout at or hit someone. But what if that someone
24、is Alexa - an AI (Artificial Intelligence 人工智能)speaker, or Roomba - a robot cleaner?A new study by Teresa Flanagan, a developmental psychologist from Duke University, found that kids aged four to eleven felt neither Roomba nor Alexa should be shouted at or attacked. However, that feeling weakened as
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