【文章內(nèi)容簡介】 rcising. Keep the three________（piece） of advice in mind and follow the advice. Then you will surely have a slim and strong body.【答案】worried；to lose；advice；healthy；for；Try；because；is；a；pieces 【解析】【分析】主要講了怎樣健康減肥。（1）句意：但是與此同時他們擔(dān)心他們的健康。be worried about，擔(dān)心，固定搭配，故填worried。（2）句意：事實上，對于每個人來說健康地減肥是重要的。It +be+形容詞+for sb.+to do sth.，故填to lose。（3）句意：這是一些好的建議。some修飾可數(shù)名詞復(fù)數(shù)或者不可數(shù)名詞，is表明后面名詞是不可數(shù)名詞，所以用advice，建議，故填advice。（4）句意：喝足夠的水，并且吃健康飲食。diet，可數(shù)名詞，前面需要形容詞修飾，health是名詞，形容詞是healthy，故填healthy。（5）句意：然后到了吃零食的時間了。It39。s time for ，故填for。（6）句意：努力遠離帶有高卡路里的食物。根據(jù)句意可知是祈使句，以動詞原形開頭，所以用try，句首單詞首字母大寫，故填Try。（7）句意：人們變胖是因為他們不能消耗他們得到的所有卡路里。前后兩句表示因果關(guān)系，前句是結(jié)果，后句是原因，所以用because，故填because。（8）句意：所以知道你真的需要多少卡路里是非常重要的。主語是knowing how many calories you really need，屬于動名詞做主語，謂語動詞用單數(shù)，時態(tài)是一般現(xiàn)在時，be+形容詞，所以be用is，故填is。（9）句意：每次至少30分鐘，運動后脈搏率應(yīng)該是每分鐘超過130。at a time，每次，故填a。（10）句意：把這三條建議記在心里。piece是可數(shù)名詞，three后面用可數(shù)名詞復(fù)數(shù)，所以用pieces，故填pieces。【點評】考查語法填空，考查詞匯在語篇中的運用能力，首先理解文章大意，然后細讀文章字斟句酌逐一作答。注意考慮句型、搭配、語境等，最后通讀一遍檢查驗證。二、八年級英語上冊閱讀理解專項練習(xí)（含答案解析）9．閱讀理解 Have you ever wondered how and why a fall leaf changes color? We first have to understand what leaves are and what they do. Plants are the world39。s food factories. Plants take water from the ground and take CO2 from the air. Plants use sunlight to turn water and CO2 into glucose（葡萄糖）. Glucose is a kind of sugar. Using it as food, plants get energy and grow. Plants using sunlight to turn water and CO2 into sugar is called photosynthesis （光合作用）. Chlorophyll helps photosynthesis. It gives plants their green color. As summer ends and autumn es, the days get shorter and shorter, and trees know to begin getting ready for winter. During winter, there is not enough light or water for photosynthesis. Trees rest during this time and live on the food they store during the summer. They begin to shut down their food﹣making factories. As the green chlorophyll disappears from the leaves, we begin to see yellow and orange leaves. These colors have been in the leaves all the time. We just can39。t see them in the summer, because they are covered up by the green chlorophyll. The bright reds and purples we see in leaves are made mostly in autumn. In some trees, glucose is caught in the leaves after photosynthesis stops. Sunlight and the cool nights of autumn turn this glucose into a red color. The brown color of trees is made from waste left in the leaves. It is mixture of all these things. It makes the beautiful leaves during autumn.（1）The underline word chlorophyll in the passage means in Chinese. A.胡蘿卜素B.葉綠素C.維生素D.花青素（2）When they rest in winter, trees live on the food they store during the . A.summerB.autumnC.winterD.spring（3）Plants use sunlight to turn into sugar. A.water and chlorophyllB.water and CO2C.CO2and glucoseD.water and glucose（4）What39。s the main idea of this passage? A.What39。s photosynthesis?B.How and why leaves change colors?C.Different kinds of leaves.D.How the seasons change.【答案】 （1）B（2）A（3）B（4）B 【解析】【分析】主要講了葉子怎樣變色及為什么變色。 （1）推斷題。根據(jù)Chlorophyll helps photosynthesis. It gives plants their green 有助于光合作用， 它賦予植物綠色，故選B。 （2）細節(jié)題。根據(jù)Trees rest during this time and live on the food they store during the ，并以在夏季儲存的食物為生，故選A。 （3）細節(jié)題。根據(jù)Plants using sunlight to turn water and CO2into sugar is called photosynthesis（ 光 合 作 用 ），植物使用陽光將水和二氧化碳轉(zhuǎn)化為糖稱為光合作用，故選B。 （4）主旨題。根據(jù)Have you ever wondered how and why a fall leaf changes color？ We first have to understand what leaves are and what they ？我們首先要了解葉子是什么以及它們做了什么，故選B。 【點評】考查閱讀理解。本文涉及細節(jié)題、推斷題和主旨題三種?？碱}型，細節(jié)題要注意從文中尋找答案；推斷題需要聯(lián)系上下文，推斷出需要的信息；主旨題需要通讀全文，了解大意之后找出中心思想。10．閱讀理解 Vision—phones（可視電話） Many inventions are very useful in our daily life. They have greatly changed our life. For example, radios, telephones and televisions are widely used in the world. When you turn on the radio, you can listen. But when you use the telephone, you can not only listen to others but also chat with them. However, you can39。t see anything at all. The television is much better than both of them. People can watch TV and listen to it, but they can39。t take part in what they see. Today, some people are using a type of telephone called the vision phone. With it two people can see each other when they are talking Visionphones can be of great use when you have something to show the person when you are calling him or her. It may also have other uses in the future. Some day you may be able to call up a library and ask to read a book over your visionphone. You may be able to do some shopping through it too. Perhaps in the future, the visionphone will e into wide use in our everyday life.（1）According to the passage, we can guess that the _______ was invented last. A.radioB.televisionC.telephoneD.visionphone（2）Maybe the visionphone can take the place of（代替） _______ some day. A.the radioB.the telephoneC.the televisionD.the car（3）According to the passage, what can we do through the vision—phone? A.Take medicine.B.Order what we need.C.Travel around the world.D.Try on clothes.（4）Which of the following is TRUE according to the passage?