Module 5 A Lesson in a Lab
培优练习
一、语法填空。
A young man, while traveling through a desert, came across a spring of clear water. 1 water was sweet. He filled his leather container so that he could bring some back to elder 2 had been his teacher. After a four-day journey, the young man 3 (present) the water to the old man. His teacher took a deep drink, smiled 4 (warm), and thanked his student very much for the sweet water. The young man went home 5 a happy heart. After the student left, the teacher let 6 student taste the water. He spit it out, 7 (say) it was awful. Apparently, it was no longer fresh because of the old leather container. He asked his teacher,” Sir, the water was awful. Why did you pretend to like 8 ?” The teacher replied,” You tasted the water. I tasted the gift. The water was simply the container for an act of kindness and love. Nothing could be 9 (sweet).” We understand this lesson best 10 we receive gifts of love from children. Whether it is a cheap pipe on a diamond necklace, the proper response is appreciation. We love the idea within the gift rather than the thing.
二、阅读理解。
There was no ordinary class. The students who came together were all science or engineering professors at Cornell University. They had interrupted their research to accept an invitation to take part in an unusual experiment: “an interesting week of poetry.” This class was part of a study to answer the questions: Why is science difficult for many non-science students? What can teachers learn about teaching if they take a class that is not in their field?
The students in the poetry class listened to lectures and took notes. They had reading tasks and had to write three short papers. All students noticed one thing—the importance of spoken words. In science and engineering classes, the instructors put tables and drawings on the blackboard. But in this poetry class, the instructors just talked. They didn't write anything on the board.
The scientists and engineers noticed one similarity between science and poetry. In both subjects, students need to find layers(层次) of meaning. Some layers are simple, clean, and on the surface; other layers are deeper and more difficult. This search for different levels of meaning doesn't happen much in undergraduate(本科) science classes, but it is important later, in graduate school. And it is always important in humanities(人文科学).
Both the poetry instructors and their students learned something about teaching from this experience. One poetry instructor, for example, now sees the importance of using informative as he teaches. Most of the scientists agreed on several points. First, humanities classes might help science students to see patterns and decide which information is important. Second, the poetry class was fun. One engineer decided, “We need to change the way we teach engineering to make it an enjoyable experience for students.”
But perhaps the most important result of the experience was this: All of the professors began to think about how they teach and how they can teach better.
1. What do we know about this unusual class?
A. The teachers did lots of writing on the board.
B. The teachers were invited to attend several lectures.
C. The students were professors from a university.
D. The students were studying science and humanities.
2. The experiment was designed to find out ?.
A. how to teach the students in the science class
B. whether poetry is difficult for science students
C. what to be taught in the humanities class
D. why many humanities students find science hard
3. Finding levels of meaning is ?.
A. important for graduate students in humanities
B. difficult for graduate students in humanities
C. common for undergraduate students in science
D. easy for undergraduate students in science
4. What did the science professors learn after the experiment?
A. They should change the way they teach.
B. A poem could be explained in clear definitions.
C. A poetry class could be more informative.
D. Their teaching was an enjoyable experience.
三、书面表达。
下周五，有几名外教要来你校参观，并且特别希望看一下同学们做试验的过程。你将作为一名导游帮助外教进行参观。请根据下列要点准备一篇100词左右的发言稿，介绍学校的实验室和同学们上实验课的情况。
序号
要点提示
1
学校发展迅速，实验室设备齐全、先进。
2
物理、化学等理科老师非常优秀，实验课生动、有趣、有意义。
3
同学们动手动脑，积极活跃；观察和实践能力迅速提高。
注意：发言稿开头和结尾已给出，但不计入总词数。
参考词汇：理科老师the science teachers；
Dear friends,
Welcome to our school. Now please allow me to introduce our lab to you.
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As students, every one of us treasures the beneficial conditions and tries to make good use of our lab.
答案与解析
语法填空。
1.The 2.who 3.presented 4.warmly 5.with
6.another 7.saying 8.it 9.sweeter 10.when
二、阅读理解。
1-4 CDAA
1. C 【解析】根据第一段 The students who came together were all science or engineering professors at Cornell University.
2. D 【解析】根据第一段This class was part of a study to answer the questions: Why is science difficult for many non-science students? What can teachers learn about teaching if they take a class that is not in their field?
3. A【解析】根据第二段This search for different levels of meaning doesn't happen much in undergraduate(本科) science classes, but it is important later, in graduate school. And it is always important in humanities(人文科学).
4. A【解析】根据最后一段All of the professors began to think about how they teach and how they can teach better.
三、书面表达。
Dear friends,
Welcome to our school. Now please allow me to introduce our lab to you.
In recent years, our school develops quickly and great changes have taken place here. On the one hand, we have wide and bright labs which are equipped with all kinds of advanced laboratory facilities.
On the other hand, the science teachers who teach us physics and chemistry are very excellent. They always make classes lively，interesting and meaningful. And the students always listen carefully, think deeply and practice actively according to the teachers’ instructions. Therefore, our abilities to observe and practice improve rapidly.
As students, each of us treasures the beneficial conditions and tries to make good use of our lab.
Module 5 A Lesson in a Lab
基础练习
完成句子。
We were ____________(惊讶) to hear what had happened.
I attended a ____________(演讲) on how to study English yesterday.
We need to consider what ____________(设施) we will use for language training.
The ____________(火焰) were growing higher and higher and soon the house was burned to the ground.
We can use the power of wind to make ____________(电).
The raft with a fisherman on it was ____________(漂浮)gently down the river.
As is known to us all，salt ____________(溶解) in water.
I came to the ____________(结论) that he had been lying.
The air in Beijing is getting much ____________ (clean) now than a few years ago.
Pour the ____________(混合物) into the cake pan and bake for 50 minutes.
重点表达。
是……的两倍长 ________________________________________
把……按顺序排列 ________________________________________
防止空气进入水中 ________________________________________
对……感到自豪 ________________________________________
应该做某事 ________________________________________
三、阅读理解。
GENERAL GUIDELINES (准则)
1. Never work alone. No student may work in the lab without a teacher present.
2. When first entering a lab, do not touch any equipment, chemicals (化学药品), or other materials in the lab until you are asked to do so.
3. Do not eat, drink, or chew gum in the lab. Do not use lab glassware as containers for food or drinks.
4. Know the positions and operating procedures (程序) of all safety equipment including the first aid kit and fire extinguisher (灭火器). Know where the fire alarm and the exits are.
5. Check the label (标签) on chemical bottles twice before removing any of the chemicals. Take only as many chemicals as you need.
6. All chemicals in the lab are to be considered dangerous. Do not touch, taste, or smell any chemicals unless specifically asked to do so.
7. At the end of your experiment, clean everything carefully and return your equipment to where you got it. Wash your hands with soap and water after performing all experiments.
WEAR
1. Dress properly during a lab activity. Long hair must be tied back and shoes must completely cover the foot.
2. Contact lenses should not be worn in the lab unless you are allowed by your teacher.
3. Any time chemicals, heat, or glassware are used, students will wear lab goggles (护目镜). Nobody should break this rule!
ACCIDENTS AND INJURIES
1. Report any accident or injury to the teacher immediately.
2. If a chemical should splash (溅落) in your eye(s) or on your skin, immediately clean with running water for at least 20 minutes.
1. Which of the following is the best title for the passage?
A. How to do an experiment
B. Things used in the lab
C. The school science lab
D. Lab safety rules
2. If you ________, you break the lab rules according to the passage.
a. touch no chemicals when first in a lab
b. pour drink into the glassware
c. take twice as many chemicals as you need
d. put everything in order at the end of your experiment
e. wear slippers on lab days
A. a, d B. a, b, c C. d, e D. b, c, e
3. If a chemical splashed on your partner's hand, you would ________.
A. just pay no attention to it
B. report it to your teacher at once
C. tie it with a piece of clean cloth
D. help him wash it with soap and water
答案和解析
完成句子。
1. astonished 2. lecture 3. facilities 4. flames 5. electricity
6. floating 7. dissolves 8. conclusion 9. cleaner 10. mixture
二、重点表达。
twice as long as
put … in order
keep air out of the water
be proud of
be supposed to do sth
三、阅读理解。
1-3 DDB
1. D【解析】文章从三个方面(实验室的基本准则、学生的穿戴、事故发生后怎么办)入手，告诉我们在实验室里需要注意的一些安全事项。
2. D【解析】从GENERAL GUIDELINES部分的第3、5及WEAR部分的第1条可知D项中的三种行为都是违反了实验室制度的。
3. B【解析】从ACCIDENTS AND INJURIES部分的第1、2条可知应该赶快将此事报告给老师；用流动的水冲洗至少20分钟，故选B。
Module 5 A Lesson in a Lab
提高练习
一、完成句子。
She graduated from the d of history and later became a history teacher.
Asia is four times ________ large ________ Europe.
To our __________(astonish), the plane crashed onto the ground with all passengers on board killed.
It is of great importance to keep a __________(balance) and healthy diet.?
He was surprised that his answer should have caused such a strong __________(react).?
The __________(equip) you need for the experiment is ready now. ?
The __________(healthy) people are, the longer they will live.?
He looked at her with a __________(mix) of admiration and curiosity.
F a good study habit from childhood is very necessary for a student.
When you heat metal, it e .
阅读理解。
There are many interesting science experiments out there for young kids. You can wow your friends and teachers with them. All you have to do is to put a little effort into it and you should have no problem coming up with an interesting science experiment. One such experiment is to show your friends and teachers that you can make mothballs (樟脑丸) dance!
If you want to do it, first, be sure that you have got all the necessary science kits for your science experiment.
What you need for this experiment is a glass filled half full with water. Add a little bit of vinegar to your glass of water, about 1/3 or 1/4 of a cup (60 ml), and one teaspoon (10 ml) of baking soda, and then carefully stir the mixture. Drop a few mothballs into the glass and have your audience watch. As long as the surfaces of the mothballs become fairly rough, they should begin to bounce up and down in the glass.
You can also do a similar experiment with raisins (葡萄干) and clear pop, such as Sprite. In this experiment, all you have to do is to fill a glass with Sprite and drop a few raisins into it. The raisins should begin to bounce up and down in the glass of Sprite. You can also replace the raisins with mothballs and you should get the same effect in the Sprite. This project works because the irregular surfaces of the mothballs and the raisins hold some CO2 bubbles (气泡), causing them to bounce up and down in a dancing motion.
1. The writer wrote this passage to ____________.
A. explain why some science experiments are easy
B. encourage people to spend more time on science
C. tell us how good he is at doing science experiments
D. teach kids how to do an easy and interesting science experiment
2. What is the most probable name of the experiment?
A. Producing mothballs.
B. Dancing mothballs.
C. Changing mothballs.
D. Swimming mothballs.
3. The underlined word “pop” in Paragraph 4 probably refers to a ____________.
A. mothball
B. kind of vinegar
C. drink with bubbles
D. special kind of raisin
4. From the last paragraph we can know ____________.
A. why Sprite has some CO2 bubbles
B. what people usually use Sprite for
C. what scientists usually do with raisins
D. why the mothballs bounce up and down
三、翻译。
众所周知，一个人越努力，他取得的进步就越大。
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学好英语是必要的。
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做完实验后，一切都有序地放在器皿柜中。
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你应该让狗呆在屋子外面。
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为保持健康，你应在工作与休息之间保持平衡。
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答案与解析
一、完成句子。
1. department 2. as, as 3. astonishment 4. balanced 5. reaction
6. equipment 7. healthier 8. mixture 9. Forming 10. expands
二、阅读理解。
1-4 DBCD
1. D【解析】通读全文，可知作者主要向我们介绍怎么做一个简单而有趣的科学实验，故选D。
2. B【解析】 根据第一段的“One such experiment is to show your friends and teachers that you can make mothballs dance！”可知选“跳舞的樟脑丸”最好。
3. C【解析】 词义猜测题。根据“such as Sprite”以及“hold some CO2 bubbles”可知pop在这里是指含有二氧化碳的饮料。
4. D【解析】根据文章的最后一句“This project works because the irregular surfaces of the mothballs and the raisins hold some CO2 bubbles, causing them to bounce up and down in a dancing motion.”我们可以知道樟脑丸为什么会上下跳动。
三、翻译。
As everybody knows, the harder a person works, the greater progress he will make
It is necessary to learn English well.
After the experiment, everything is put in order in the cupboard.
You should keep the dog out of the room.
To keep healthy, you should maintain a balance between work and relaxation.
