【文章內(nèi)容簡介】 全文，根據(jù)第一段中的“there39。s a mon piece of celestial （天上的）fortunetelling that green skies mean a tornado is on its way.”和最后一段中的“Still, none of the conditions that can turn skies green are unique to the clouds that produce tornadoes. Sometimes they just lead to lots of rain, and maybe some hail.”可知，本文主要話題是關(guān)注綠色的天空是否意味著即將來臨的龍卷風(fēng)展開的，故選B。 （2）考查細(xì)節(jié)理解。根據(jù)第二段中的“Daytime skies are blue because blue shorter wavelengths of visible light tend to bounce off （反 射）air molecules better than red longer wavelength light.”可知，白天天空是藍(lán)色,因為藍(lán)色短的波長的可見光會反射空氣分子比紅色的長波長光。故選C。 （3）考查代詞指代。根據(jù)第二段中的“The sunset might look exclusively （獨(dú)有的）red and orange, but there39。s still some green and even blue light hidden in there, just far less than the other colors.”可知，選A。 （4）考查推理判斷。根據(jù)第三段中的“But for us to notice the remaining green light, it needs to hit something that reflects green light much better than red. That39。s where water es in.”可知，水既能反射藍(lán)光，也能反射紅光，故選B。 【點(diǎn)評】本題考點(diǎn)涉及細(xì)節(jié)理解，代詞指代，推理判斷和主旨大意四個題型的考查，是一篇科普類閱讀，要求考生在捕捉細(xì)節(jié)信息的基礎(chǔ)上，進(jìn)一步根據(jù)上下文的邏輯關(guān)系，進(jìn)行分析，推理，概括和歸納，從而選出正確答案。4．犇犇閱讀理解 Kaitlin Woolley and Ayelet Fishbach report in Psychological Science that a meal taken familystyle from a central plate can greatly improve the oute of later negotiations. Having conducted previous research in 2017 revealing that eating similar foods led to people feeling emotionally closer to one another, Dr Woolley and Dr Fishbach wondered whether the way in which food was served also had a psychological effect. They theorized that, on the one hand, sharing food with other people might indicate food scarcity（短缺）and increase a feeling of petition. However, they also reasoned that it could instead lead people to bee more aware of others39。 needs and drive cooperative behavior as a result. Curious to find out, they did a series of experiments. For the first test they recruited 100 pairs of participants from a local cafe, none of whom knew each other. The participants were seated at a table and fed tortilla chips with salsa. Half the pairs were given their own basket of 20 grams of chips and a bowl of 25 grams of salsa, and half were given 40 grams of chips and 50 grams of salsa to share. As a cover for the experiment, all participants were told this snack was to be consumed before the game began. The game asked the participants to negotiate an hourly wage rate during a fictional strike. Each person was randomly assigned to represent the union or management and follow a set of rules. The researchers measured cooperation by noting the number of rounds it took to reach an agreement, and found that those who shared food resolved the strike significantly faster（in 8. 7rounds）than those who did not（ rounds）. A similar experiment was conducted with 104participants and Goldfish crackers（餅干）, this time negotiating an airline39。s route prices. The results were much the same, with the foodsharers negotiating successfully 63. 3%of the time and those who did not share doing so 42. 9%of the time. （1）What does the familystyle meal in the report refer to？ A.A meal taken at home.B.A meal shared with others.C.A meal consumed by oneself.D.A meal taken in a family atmosphere.（2）For what purpose did the researchers carry out the present experiments? A.To show the way food is served.B.To prove sharing food increases petition.C.To confirm sharing food can promote cooperation.D.To find out whether sharing food can get people close emotionally.（3）Why were participants asked to eat up the snack before the game? A.To add to their energy.B.To reward them for their participation.C.To hide the intention of the experiment.D.To avoid the distraction during the game.【答案】 （1）B（2）C（3）C 【解析】【分析】本文是一篇說明文，介紹了外交宴席的心理學(xué)，研究表明，從中間菜采取的“家庭式”餐，可以大大改善后續(xù)談判的結(jié)果。 （1）考查細(xì)節(jié)理解。根據(jù)第二段中的“They theorized that, on the one hand, sharing food with other people might indicate food scarcity（短缺）and increase a feeling of petition. However, they also reasoned that it could instead lead people to bee more aware of others39。 needs and drive cooperative behavior as a result.”他們形成了一套理論，認(rèn)為一方面，與他人一起吃飯可能表明糧食短缺，并加強(qiáng)了競爭的概念。然而，他們還推斷，這種方式可能會導(dǎo)致人們更加了解他人的需求，從而推動合作性的行為?？芍猣amilystyle指的是與別人一起用餐，故選B。 （2）考查細(xì)節(jié)理解。根據(jù)第二段中的“However, they also reasoned that it could instead lead people to bee more aware of others39。 needs and drive cooperative behavior as a result. Curious to find out, they did a series of experiments.”然而，他們還推斷，這種方式可能會導(dǎo)致人們更加了解他人的需求，從而推動合作性的行為。 出于好奇心，他們做了一系列實驗?？芍xC。 （3）考查細(xì)節(jié)理解。根據(jù)第三段中的“As a cover for the experiment, all participants were told this snack was to be consumed before the game began.”作為實驗的掩護(hù)，所有受試者都得告在游戲開始前就要吃完這些零食。可知選C。 【點(diǎn)評】本題考點(diǎn)涉及細(xì)節(jié)理解題型的考查，是一篇科研類閱讀，考生需要準(zhǔn)確掌握細(xì)節(jié)信息，并結(jié)合題目要求，從而選出正確答案。5．犇犇閱讀理解 Hacking isn39。t just for puters and smartphones, According to a study published last week in the journal Science, scientists have found a way to hack a plant39。s genes in order to make it use sunlight more quickly. Someday, the results could increase the amount of food produced around the world. Photosynthesis（光合作用）is the word used to describe how plants use sunlight, water, and carbon dioxide to make their own food. Scientists who conducted the new study say this is a very slow process. Plants use less than 1 percent of the energy available to therm. But by hacking a plant39。s genes, the scientists were able to increase the amount of leaf growth on plants between 14 and 20 percent. Specifically, scientists hacked the plant39。s protective system. Normally, this system is activated when a plant gets too much sunlight, said scientist Krishna Niyogi, coauthor of the study. When the plant senses the light, it gets rid of extra energy and creates more leaves. When the plant is in shade, the protective system is turned off, but the process is slow. Stephen Long is the lead author of the study. He pared a plant39。s protective system to lightadjusting glasses. When a person wears the glasses outside during the day