题目内容

【题目】 One Monday morning, Paul and his classmates were in the science laboratory for their chemistry lesson. The students were going to work in pairs to do an experiment. Before they began, the teacher gave them this description of the different stages of the experiment.

Stage 1: Prepare the equipment: a test tube, a crucible（坩埚）, a Bunsen burner（煤气灯）and tongs（钳子）.

Stage 2: Weigh 5 grams of baking soda (小苏打) and put it in a crucible.

Stage 3: Heat 10 ml of hydrochloric acid (盐酸) in a test tube.

Stage 4: Pour the warm acid onto the baking soda and continue to heat the mixture.

Result: The acid reacts with the bicarbonate（碳酸氢盐）to form water, carbon dioxide gas and salt.

The hotter the mixture, the quicker the reaction. Continue to heat the mixture until the water evaporates（蒸发）, leaving the salt in the crucible.

Paul and his partner followed the instructions and set up their equipment. Paul went to the cupboard to get a bottle of hydrochloric acid. He found that there was only one bottle in the cupboard so he took that. There was no label on the bottle and Paul didn’t check with the teacher if it was the right solution(溶液).

He measured the liquid and poured it into a test tube. Using tongs to hold the test tube, he heated it over the Bunsen burner. That’s when things started to go wrong. The liquid in the test tube was not hydrochloric acid. When it was heated, it formed a thick cloud of white gas. Soon the room was full of this strong smelling white gas.

All the students started coughing and their eyes hurt. The teacher immediately opened the windows and ordered the students to leave the laboratory at once. She realized that the liquid was acrylamide (丙烯酰胺) and that it is poisonous.

Fortunately, nobody was injured in the incident. However, it taught the students and the teacher a good lesson.

【1】The teacher and her students planned to make ________ in the experiment.

A.waterB.saltC.acrylamideD.carbon dioxide gas

【2】How can they make the reaction quicker?

A.By putting more hydrochloric acid.B.By heating the hydrochloric acid.

C.By making the water cooler.D.By making the mixture hotter.

【3】Why did Paul make the mistake?

A.There was only one bottle.B.His partner didn’t help him check it.

C.There was no label on the bottle.D.He didn’t pick the right one out of the bottles.

【4】What happened when Paul heated the liquid?

A.His teacher ordered him to stop it at once.B.The white poisonous gas was formed.

C.All the students left the lab at once.D.Someone was injured in the accident.

【5】What lesson did the incident teach the student and the teacher?

A.Never leave a bottle without a label in the chemistry lab.

B.Obey your teacher’s instructions in the chemistry lab.

C.Acrylamide can’t take the place of hydrochloric acid.

D.While something unusual happened, leave the lab at once.

【答案】

【1】B

【2】D

【3】C

【4】B

【5】A

【解析】

这篇短文主要讲述了一天上午，Paul和同学们在科学实验室上化学实验课。同学们在老师的指导下分组进行实验。Paul误用了一个没有贴标签瓶子里的液体，结果出现了意外，丙烯酰胺反应后生成了有毒的气体。

【1】细节理解。根据文中Result: The acid reacts with the bicarbonate（碳酸氢盐）to form water, carbon dioxide gas and salt.可知，老师和她的学生计划在实验中做盐。故选B。

【2】细节理解。根据文中The hotter the mixture, the quicker the reaction.可知，通过使混合物变热。故选D。

【3】细节理解。根据文中He found that there was only one bottle in the cupboard so he took that. There was no label on the bottle and Paul didn’t check with the teacher if it was the right solution(溶液).可知，他发现柜子里只有一瓶酒，就拿走了。瓶子上没有标签，保罗也没有和老师核对这是否是正确的解决方案。故选C。

【4】细节理解。根据文中That’s when things started to go wrong. The liquid in the test tube was not hydrochloric acid. When it was heated, it formed a thick cloud of white gas.可知，白色有毒气体形成。故选B。

【5】主旨大意。根据文中Never leave a bottle without a label in the chemistry lab.可知，不要把没有标签的瓶子留在化学实验室里。故选A。

1、平心静气审题，切忌粗心。在解答阅读题时，千万不要慌，要静下心来，按照由易到难，由浅入深的思维方式，先从容易的入手，逐渐的打开思路。

2、仔细研读语段，整体感知文章内容。通常阅读一篇文章，第一遍需要速读，首先要重点理解文章的体裁是记叙文还是说明文。答题时切忌文章都没完整的阅读过，就匆匆忙忙地写答案。最好先把文章从头到尾通读一遍，对文章有一个整体的认识和理解。

3、巧妙借助"原话"，确定解题空间。在通读全文的基础上，将要回答的问题放到阅读的文章中来，再去浏览所要回答的试题，经过初步的思考，确定解决问题的阅读空间。有些试题它要求用文中原话来回答，我们就可以用文中的原话来作答，这时就可以"从文章中直接提取信息"来回答问题。

4、合理控制答题时间，先易后难。应浏览阅读理解的全文，了解阅读理解全文的概貌。看完后，应记住阅读理解文章的要点，阅读理解重要的结论以及阅读理解中的一些关键性的人名、地点、定义和数字。碰到阅读理解的难题时，千万不要钻牛角尖，耽误太多时间。

如第4小题细节理解。根据文中That’s when things started to go wrong. The liquid in the test tube was not hydrochloric acid. When it was heated, it formed a thick cloud of white gas.可知，白色有毒气体形成。故选B。

练习册系列答案
相关题目

【题目】根据首字母提示写单词

【1】Is India an A________ country?

【2】He took an active part in all kinds of activities i_______ tennis, swimming, running and so on.

【3】Most vegetables c________ fibre.

【4】We should brush our t________ every day.

【5】Tofu is a kind of b________ products.

【题目】根据句意及汉语提示完成句子

【1】这个女孩在公众场合羞于讲话。

The girl is too shy to speak ________ ________.

【2】我们应该养成好习惯。

We should ________ a good ________.

【3】吸烟有害健康。

Smoking ________ ________ ________ health.

【4】那位老人过着幸福的生活。

The old man lives ________ ________ ________.

【5】天气很糟糕。因此，运动会推迟了。

The weather was bad. ________ ________ ________， the sports meet was put off.

【题目】根据下列句子及所给的首字母，在答题纸上按题号写出各单词的正确、完全形式（每空限填一词）。

【1】---Have you seen any good films r ________?

---I think Amazing China is a must-see.

【2】These days, some primary school students are s ________ to be at school by 8:30 a.m.

【3】The w ________ in spring can change very quickly, sometimes terribly cold and sometimes very warm.

【4】Mario is interested in trees, animals and plants, so he likes to know more about the n ________ world.

【5】I kept thinking about the accident and woke up several times d ________ the night.

【6】To make Russian soup, we need one cabbage, four carrots, three t ________ and some other vegetables.

【7】Sam, this is my room, and y ________ is just across the hall. You can’t miss it.

【8】U ________ we talk to someone about our problems and worries, we’ll certainly feel worse.

【9】The story Tom told us yesterday was so h ________ that we laughed a lot.

【10】Mary hasn’t w ________ to me for ages since she moved to Sydney. Maybe I have to call her up though it costs a lot.

【题目】—Have you finished painting the fence, Elsa?

—No. I forget ________ it.

A.paintB.to paintC.paintingD.painted

【题目】 We may be very pleased with the rapid progress we have made in every field of study. But the way to test a student’s knowledge and ability still ___poor. To a certain degree, it was even as terrible as it was one ____years ago, and we have done almost _____to improve our examination system.

It is ____known that the examination system we are now using may be good way of testing a student’s memory, ____it can tell you very little about a student’s ability. It does no good ____students and teachers.

As soon as a child begins school, he enters __world of examinations that will decide his future. So he has to bury himself in mountains of books and papers preparing for the tests.

In fact, a good examination system ___train a student to think for ____. But it now does nothing of the sort. So students _________to remember what is taught. It does not enable them______ more and more knowledge. The students who come _______in the examination may often not be the best in their future career. The achievements ___they make are not so excellent as we expected.

Besides, examination often drives teachers to “teach to the test”. They are forced to train students what to do with the coming examination from time to time, which makes lessons_____. There must be some ______and better way to test a student’s ability than memory test. That’s what we should do at once.

【1】A.remainB.remainsC.remainedD.to remain

【2】A.hundredsB.hundred ofC.hundredD.hundreds of

【3】A.anythingB.everythingC.nothingD.something

【4】A.wellB.betterC.bestD.good

【5】A.andB.ifC.otherwiseD.but

【6】A.toB.atC.onD.with

【7】A.aB.anC.theD./

【8】A.mustB.shouldC.canD.would

【9】A.himB.themC.themselvesD.himself

【10】A.encouragedB.are encouragedC.have encouragedD.to encourage

【11】A.gainB.gainingC.to gainD.gains

【12】A.firstlyB.at firstC.oneD.first

【13】A.whoB.whenC.whichD.what

【14】A.boringB.boredC.boreD.bores

【15】A.simplyB.simpleC.simplestD.simpler

【题目】 Mark Twain，the famous American writer and a great master of humor，liked to play jokes on others. But once a joke was played on him. One day Mark Twain was invited to give a talk in a small town. At lunch he met a young man，one of his friends.

The young man said that he had an uncle with him. He told Mark Twain that his uncle never laughed or smiled，and that nobody and nothing was able to make his uncle smile or laugh.

"You bring your uncle to my talk this evening，"said Mark Twain. " I'm sure I can make him laugh.

That evening the young man and his uncle sat in the front. Mark Twain began to speak. He told several funny stories and made everyone in the room laugh. But the man never even smiled. Mark Twain told more funny stories，but the old man still kept quiet. Mark Twain continued to tell his funny stories. Finally he stopped. He was tired and quite disappointed.

Some days later，Mark Twain told another friend what had happened. "Oh，"said his friend. "I know that man. He's been deaf for years."

【1】The writer wrote the passage mainly to__________.

A.tell readers Mark Twain liked playing jokes

B.tell readers a joke played on Mark Twain

C.tell readers Mark Twain was a great writer

D.tell readers how to tell a funny story

【2】One day Mark Twain met __________at lunch.

A.a friendB.his brotherC.his teacherD.a young girl

【3】Why did Mark Twain ask the young man to bring his uncle to his talk?

A.Because he thought he could make him laugh.

B.Because he wanted to get to know the old man.

C.Because the old man could tell stories.

D.Because he wanted to learn from the old man.

【4】Mark Twain stopped finally because he was__________.

A.disappointedB.sorryC.illD.sleepy

【5】Mark Twain couldn't make the old man laugh because__________.

A.his jokes were not funny

B.the old man wasn't interested in the jokes

C.the old man could tell more funny jokes

D.the old man was deaf

【6】Where is the story probably from？

A.In the science magazine.B.In the biography.

C.In the fashion newspaper.D.In the medical book.

【题目】根据汉语意思完成句子

【1】如果你不努力工作，你就不会成功。

You won't ______ ______ ______ ______ work hard.

【2】什么使你对英语这么感兴趣呢？

What makes you ______ ______ ______ English?

【3】你知道它是什么意思吗？

Do you know ______ ______ ______？

【4】这些规则很重要，请把它们写下来。

These rules are very important. Please ______, ______ ______

【5】你认为我们的城市怎么样？

What do you ______ ______ our city?

【题目】 Complete the sentences with the given words in their proper forms（用括号中所给单词的适当形式完成下列句子）：

【1】The main_______ of the place is the night scene. （attract）

【2】Nancy can't go swimming with us because she is _______ill. （serious）

【3】Ang Lee，the famous_______ won Oscar again early this year. （direct）

【4】Many_______ go to the beautiful island for pleasure. （tour）

【5】Would you like to meet_______ new headmaster，Mr. Brown？（we）

【6】Lisa and Linda had the time of their_______ during the winter holidays. （life）

【7】Are there any_______ news items in the paper this morning？（interest）

【8】I will remember this meeting with_______（please）

违法和不良信息举报电话：027-86699610 举报邮箱：58377363@163.com

精英家教网