2020届高三英语二轮专题总复习 单项选择精选（七）VIP

全国通用2020;2020届高三英语二轮专题总复习单项选择精选（七）阅读理解For decades, people have been telling each other，“You are what you eat.”However, it doesnt mean, for example, that if you eat a plant, you become a plant. At least, not for people.For a certain kind of sea slug (海蛞蝓, however, those words are more than just a reminder to eat well. The Elysia chlorotica is a sea slug that looks like a leaf and eats by sucking the insides out of algae(海藻These algae, like plants, get their food by using sunlight to help make sugar.At a recent meeting of scientists, a biologist named Sidney K. Pierce reported a surprising observation in these algaeeating sea slugs. Pierce does his research at the University of South Florida in Tampa.Pierce already knew that these sea animals, just like plants, have the right chemical tools to turn sunlight into food. Surprisingly, now hes learned that sea slugs arent simply stealing what they need to do this from algae. Theyve also stolen the recipe for how to make chlorophyll (叶绿素，a chemical that is vital to the process, and can make chlorophyll themselves. In other words, they have started to behave like their food.“This could be a fusion (融合 of a plant and an animalthats just cool，”John Zardus told Science News. Zardus is an invertebrate zoologist at The Citadel in Charleston, SC. Invertebrates are animals that dont have backbones ( like slugs, and zoology is the study of animals.Inside their cells, plants have tiny structures called chloroplasts (叶绿体These chloroplasts turn carbon dioxide and water into sugar using sunlight and a chemical called chlorophyll, which is known as photosynthesis (光合作用. Like plants, algae that get eaten by sea slugs also use photosynthesis. When Pierces slug eats algae, it separates out chloroplasts. Instead of digesting and excreting (排泄 chloroplasts, the sea slug absorbs them inside its own cells. Pierce and his colleagues already knew that once a sea slug has chloroplasts inside its cells, it can use photosynthesis to make food, which means it may not even have to eat for the rest of its life (about a yearBut the chloroplasts use up the chlorophyll during photosynthesis, and a fresh supply is needed. Where does it come from? One idea was that when an animal absorbed chloroplasts, they came with a lifetime supply of chlorophyll.But as it turns out, thats not the case with these sea slugs. They have stolen more than just chloroplasts.这是一篇科普文。美国科学家最近发现了软体动物海蛞蝓的一种奇怪的生活习性：它能吸收植物的叶绿体，存入体内，自己进行光合作用，从而获取食物。1When people say“You are what you eat”，it generally means that _.Athe nutrition in a persons diet affects his or her healthByoull finally become something if you eat somethingCall people must be responsible for their actionsDthe diet cures more than the doctor解析句意理解题。根据下文所举实例可知，此句的意义不是你吃了什么就会变成什么。采用反证法可推知，此句的意义是“人如其食”，即饮食决定健康。答案A2We can infer from the text that John Zardus is a scientist who _.Agives suggestions on the recipeBobserves the evolution of the plant and animal lifeCstudies animals without backbonesDdoes research on the bones of animals解析推断题。根据短文中的“Invertebrates are animals that dont have backbones(like slugs，and zoology is the study of animals.”可知，invertebrates是无脊椎动物，zoology是动物学。由此可以判断John Zardus是一位研究无脊椎动物的科学家。答案C3Photosynthesis may be defined as the process of _.Aremoving oxygen and increasing carbon dioxideBchloroplasts using chlorophyll to make sugarCdigesting and excreting chloroplastsDabsorbing water and sugar from the soil解析细节题。根据短文中的“These chloroplasts turn carbon dioxide and water into sugar using sunlight and a chemical called chlorophyll.”可知，光合作用就是利用叶绿素和阳光，将二氧化碳和水转化为糖的过程。答案B4According to the finding of Pierce and his colleagues, sea slugs, unlike other animals，_.Acan store a lifetime supply of chlorophyllBnever have the function of photosynthesisCoften get eaten by plants like algaeDcan make their own chlorophyll解析细节题。根据短文中第四段中的“and can make chlorophyll themselves.In other words，they have started to behave like their food”和倒数第二段最后的“it can use photosynthesis to make food”可知，海蛞蝓与其他动物的区别是它们能自己制造叶绿素，并利用光合作用来为自己提供食物。答案D书面表达假如你叫李华，是一位高中生。随着可接的发展IPAD已经成为中学生的新宠。用IPAD既可以听音乐，阅读纯文本电子书，又可以玩电子游戏。请你用英语给某英语报社写一封信，谈谈中学生使用IPAD的情况。信的内容包括以下几点：使用IPAD对学习的好处。对课堂纪律和学习可能产生的负面影响。提出自己的建议并且说明理由。注意：词数100左右。Dear Editor,Im a senior high school student, named Li Hua. Now many students have iPods and think it s a fashion to use them. Using an iPod, we can listen to music, download a lot of learning materials and read them on the sceen. Apparently, it s helpful to our study, especially to our English listening.Some students, however, bring their iPods to classroom and listen to music with earphones, which makes the teacher and other students greatly annoyed. Some of them even waste precious time in class playing video games.In my opinion, as a student, we should make good use of iP