Unit 5 Section C Developing ideas & Presenting ideas & Reflection 课后习题 (新教材)外研版(2020)选择性必修第三册.docx
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1、Unit 5 Learning from nature Section C Developing ideas focus on;be opposed to;in return to 1.He gave me a lot of delicious food my kind help. 答案 in return to 2.I the way of life I am living. 答案 am opposed to 3.The basketball player reacted to the judges decision by the match. 答案 withdrawing from 4.A
2、s students,we should what we are learning now. 答案 focus on .翻译句子 1.我懂四种语言,如日语、英语。(such as) 答案 I know four languages,such as Japanese and English. 2.在参观完实验室之后,我们被带到了一个大厅里。(having been done) 答案 Having been shown around the lab,we were led into a big hall. 3.离开了他的朋友们,他感到很孤独。(depart,现在分词短语作状语) 答案 Depart
3、ing from his friends,he felt very lonely. 素养提升 .阅读理解 Companion planting is the idea that some kinds of plants can help each other grow.Plants that are compatible(兼容的,能共处的) together generally have similar needs in terms of nutrients,soil and moisture levels. Advice about which plants are compatible i
4、s sometimes based more on tradition than proof.But experts say there is evidence to support certain combinations.These can improve harvests,reduce disease and help with pest control by attracting helpful insects. For example,some kinds of soil bacteria take nitrogen from the air and make it into a f
5、orm that plants can use.The plants hold the nitrogen in their roots.Legumes(豆科植物)are especially good at this nitrogen(氮)fixing.Then any crops that share the same space with the legumes can get the nitrogen when the roots are broken down. Beans and potatoes can also share territory well because their
6、 roots reach different levels in the soil.Deep-rooted vegetables get nutrients and moisture from lower down in the soil,so they do not compete with plants with shallower roots. But some plants placed together may harm each others development.For example,tomatoes do not like wet soil but watercress d
7、oes,so you would probably want to keep them separated. Some kinds of produce should be kept apart even after being harvested.This is because of ethylene gas(乙烯气体).Ethylene is a plant hormone(激素)that can cause some foods to ripen too quickly.Apples release ethylene gas.Apricots,melons and tomatoes al
8、so release a lot of ethylene.Some vegetables are easily affected by ethylene,including asparagus,broccoli,cabbages and cucumbers. This risk of ripening too soon is why markets often separate high ethylene-producing foods from those that are sensitive to the gas.But if you put an apple in a bag with
9、a green banana,the ethylene from the apple will make the banana ready to eat sooner. What about peaches,plums and nectarines?These kinds of fruit do not need any help from an apple they release enough ethylene to ripen themselves.But that does not mean there is no way to get the job done faster. Gro
10、wers suggest placing the fruit in a fruit bowl or in a paper bag with the top folded over.Keep the fruit at room temperature,out of direct sunlight.Once the fruit is soft enough,either use it or put it in the refrigerator to keep it from getting too ripe. 【语篇解读】本文为说明文。这篇文章主要介绍了一些农业知识,其中说明了哪些植物可以混 栽,
11、哪些植物不能一起种植以及哪些植物可以释放乙烯气体。 1.Companion planting refers to the idea that . A.some crops can grow together to benefit each other B.some crops have the similar needs of nutrients,soil and water level C.some plants can damage each other if grown together D.a good farming method to prevent natural disaste
12、rs 答案 A 解析细节理解题。根据第一段可知混栽植物指的是有些植物可以一起种植,彼此受益的观点,故选 A 项。 2.According to the text,which of the following cannot grow together? A.Beans and potatoes. B.Tomatoes and watercress. C.Legumes and corns. D.Rice and sugarcane. 答案 B 解析细节理解题。根据第五段的“For example,tomatoes do not like wet soil but watercress does,
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