人教版单词书写练习

1、 第 5 单元课题 2 如何正确书写化学方程式课时练第 1 课时 化学方程式的配平基础达标1.化学方程式 aC2H2+bO2 cH2O+dCO2配平后 a、b、c、d 数值为（ ）A.2、5、2、4 B.1、2、1、2 C.4、5、2、4 D.1、3、1、22.我国国产芯片“龙芯二号”的核心部件是以高纯度的单质硅为原料制造的，Si 的制备原理之一是：SiClx+2H2 高 温 Si+yHCl。该反应式中的 x、y 分别是（ ）A.2、4 B.4、4 C.4、2 D.1、03.配平是书写化学方程式中常出错的环节，请配平化学方程式（化学计量数为 1 也要填入横线） 。（1）_H 2+ _Fe2O3_ H 2O +_Fe（2）_Fe 3O4+_C 高 温 _。

2、2019 中考英语人教版八下 Unit910 阅读+重点单词回扣练习及答案一、阅读理解。APollutionHundreds of years ago, life was much harder than it is today. People didnt have modern machines. There was no modern medicine, either. Life today has brought new problems. One of the biggest is pollution （污染）. Water pollution has made our rivers and lakes dirty. It kills our fish and polluted our drinking water. Noise pollution makes us talk louder and become angry more easily. Air pollution is the most seriou。

3、2019 中考英语人教版八下 Unit34 阅读 +重点单词回扣练习及答案一、阅读理解。ACould your best friend make you fat?Researchers who have studied“networks”of obesity(肥胖) think so：they found that if someones friend becomes obese, that persons chances of becoming obese increase by more than half.Brothers or sisters and a husband or a wife also have an influence, although reduced_people whose brothers or sisters became obese were 40 percent more likely to grow obese, while people whose husband or wif。

4、2019 中考英语人教版八下 Unit78 阅读 +重点单词回扣练习及答案一、阅读理解。AMany of us dont pay much attention to the importance of eye care. It is said that if you take care of your body, then you can surely be healthy. That is why our eyes should be given a lot of care. Natural eye care should be put in a number one place.w There are seve ral causes leading to poor eyesight like not enough food, genes (基因) and aging(老化 ). Televisions, computers and reading are also the causes of having poor 。

5、2019 中考英语人教版八下 Unit56 阅读 +重点单词回扣练习及答案一、阅读理解。A“I dont like my parents.They always tell me I should do this，and should not do that.It sometimes makes me angry， ”said Zhang Hua，a middle school student in Guangzhou.Do you have the same problem？Perhaps your parents had the same problem when they were your age long ago.Why does it seem that some parents are not so friendly in their childrens eyes?One of the biggest problems is when someone becomes a parent，he/she li。

6、2019 中考英语人教版七下 Unit16 阅读 +重点单词回扣练习及答案一、阅读理解。ADo you sleep well? If your answer is no, the following might help you.Set a certain bedtime and rising timeA certain bedtime and rising time can help you build up your body clocks. Set a bedtime which is good and natural for you. Dont change your bedtime and rising time on weekends.Avoid exciting activities just before sleepingExciting activities get your thoughts running. At the same time, if you make tomorrows plan or re。

7、2019 中考英语人教版八上 Unit56 阅读 +重点单词回扣练习及答案一、阅读理解。AAlmost every Chinese person can recite the two lines of the famous poem. “Every grain on the plate comes from hard work (难知盘中餐 , 粒粒皆辛苦) “. But sadly, many of us dont actually get the real meaning of these lines: Dont waste food.A CCTV program, News One Plus One, reported that food Chinese people throw away every year is enough to feed 200 million people for a year.Do we have too much food? No, according to the 。

8、2019 中考英语人教版八上 Unit12 阅读 +重点单词回扣练习及答案一、阅读理解。AA serious earthquake can be a terrible experience, and it is easy to forget safety measures(措施) in disorder(混乱). Fortunately, most earthquake safety measures are common sense, but if you forget everything else, remember the following instructions: drop, cover, and hold on. Also, most of earthquake deaths happen after the earthquake, so remember that the danger does not end when the shaking does! If you stay indoors dur。

9、2019 中考英语人教版九全 Unit34 阅读 +重点单词回扣练习及答案一、阅读理解。AHave you ever seen a car without a driver? It sounds crazy, but these computer-driven driverless cars will soon be filling roads near you. Companies like Google and Tesla have been designing and testing these cars, and the technology is there.So how? The cars have sensors（感应器）all around which can find other cars and objects in the road. Road signs are read by cameras, and satellite navigation systems（卫星导航系统）ar。

10、2019 中考英语人教版九全 Unit56 阅读 +重点单词回扣练习及答案一、阅读理解。ADrunk driving has become a serious problem not only in China but also in other countries. In America, a local organization is taking action to stop it. Now, it is looking for 50 musicians and performers to make a series of CDs named Kids Saving Kids. If your music is chosen, it will be nationally promoted(提升) and sold on the market. Thousands of music fans around the world will hear it. You dont need to pay for all this.。

11、2019 中考英语人教版七上 Unit59 阅读 +重点单词回扣练习及答案一、阅读理解。ADo you consider failure as an ending? Do you often feel after a failure that you are good for nothing? Then be careful, you are one of them who have bad relationship with failure. And this is the only reason why people often keep themselves away from their success. The power of failure is that it helps us to learn fro our mistakes and missteps and we must consider a failure as an opportunity to grow rather than giving up.L。

12、2019 中考英语人教版七上 Unit14 阅读 +重点单词回扣练习及答案一、阅读理解。ADear Sunday Globe,I am writing to tell you about your article Smartphones Make Life Easier in last Sundays newspaper. You did an excellent job explaining the good points of smartphones, but you didnt talk about their bad points at all. So, I hope youll let me give your readers some advice on smartphone etiquette (礼仪). The first point Id like to address is loudness. When you talk on your smartphone in public, please dont 。

13、2019 中考英语人教版九全 Unit78 阅读 +重点单词回扣练习及答案一、阅读理解。AThere have always been a lot of commonly believed but false(虚假的) ideas about being fat and doing exercise. Some people believe that they cant help putting an weight as they get older, while others hold that if they stop exercising, their muscles(肌肉) will turn into fat. Here are some more myths.Ill never lose weight-I come from a fat familyWrong! While we cant change the body type we are born with, we cant blame our ge。

14、2019 中考英语人教版九全 Unit910 阅读+重点单词回扣练习及答案一、阅读理解。AThe Worlds Water ShortageThe world is not only hungry, but it is also thirsty for water. This may seem strange to you, since nearly 70 percent（百分比）of the earths surface is covered with water. But about 97 percent of this huge amount is sea water, or salt water. Man can only drink and use the other 3 percentthe fresh water from rivers, lakes, underground, and other s ources（资源）. And we cannot even use all of that, 。

15、2019 中考英语人教版八上 Unit34 阅读 +重点单词回扣练习及答案一、阅读理解。A（2019 中考日常生活类训练）There are always times when your children get bored with studying. There are also moments when you are looking for something educational (教育的) yet funny and easy to do. With a few things and a little preparation, you can easily entertain (娱乐) and educate your children. Do you read any magazines with pictures? Keep them. They can make a funny family game.Sit with your children and look at the。

16、2019 中考英语人教版九全 Unit12 阅读 +重点单词回扣练习及答案一、阅读理解。ADisasters happen all the time somewhere in the world. Are you ready if one hits your neighborhood next week? Find out what you need to do now before it is too late. Lets take an earthquake for example.During an earthquake, get under a strong object like the kitchen table. Dont leave the building during the shaking, or you might be hurt by falling objects from the outside of the building.When you are in bed during the night。

17、2019 中考英语人教版八上 Unit78 阅读 +重点单词回扣练习及答案一、阅读理解。AThe world has many beautiful sounds. We can hear the songs of birds and the laugh of people. We can listen to cool music and news reports. And its all because of our ears! They bring us a world of sounds.But some people cant hear any sound at all. Some are born deaf. Others can hear well in their childhood, nut too many loud sounds hurt their ears later on.Many people in China cant hear ordinary sounds clearly. Lots of the。

18、第 5 单元课题 2 如何正确书写化学方程式课时练第 2 课时 化学方程式的书写基础达标1.汽车排气管中安装催化转化器可减少尾气污染，其反应原理是 2CO+2NO 2X+N2，其中 X 的化学式是（ ）A.NO2 B.CO2 C.H2O D.C2.学习化学方程式的书写时，小琳同学写了以下化学方程式：A.Mg+O2 MgO2 B.KClO3 KCl+O2 C.H2+CuOCu+H 2O D.2H2+O 22H2O E.4Fe+3O2 2Fe2O3根据化学方程式错误的不同，将其序号填入以下相应的空白处：化学式写错的是 ；未配平的是 ；“”使用不当的是 ；未注明反应条件的是 。3.某学生写了下面 6 个化学方程式:A.Mg+O 2MgO 2、B.2P 2。