1. Inventors and inventions
Unit 3
Inventors and inventions

2. Do you know what are the four inventions in ancient China?

3. What are they famous for?
Newton
discovered
gravity

4. Benjamin Franklin
discovered
flash is electricity.

5. Stephenson
invented
the train

6. Madame Curie
discovered
radium

7. Zhang Heng
invented
the seismograph
['saizməgrɑ:f] 地动仪

8. Discuss in pairs which pictures below show inventions and which show discoveries.
Stephenson’s
“Rocket”
An amphibious
car
DNA

9. Work out two rules:
A discovery is_____________________
________________________________
______.
finding out something
already existing in nature but not yet
known
An invention is ____________________
________________.
creating something
not existing before
What’s the connection between discovery and invention?
Discoveries often lead to inventions.

10. Look at the list below and work out
a suitable order.
Applying for a patent
2. Finding a problem
3. Doing research
4. Testing solution
5. Thinking of a creative solution
6. Deciding on the invention

11. The Problem of the Snakes
Unit 3
The Problem of the Snakes
蛇 的 困 扰

12. Words preview
courtyard
walnut
distinguish
merciful
product
powder
perfume
stainless
n. 院子；庭院；天井
n. 胡桃；胡桃木
vi. & vt. 显示……差别；
使……有所不同；辨别
adj. 宽大的；仁慈的
n. 产品
n. 粉末；火药
n. 香水；香味
adj. 无锈的；没有污点的

13. Words preview
cube
cubic
abrupt
abruptly
convenient
caution
expectation
passive
n. 立方体；立方
adj. 立方的
adj. 突然的；意外的
adv. 突然地；唐突地
adj. 便利的；方便的
n. 小心；谨慎
n. 预料；期待；期望
adj. 被动的；消极的；
被动语态的

14. Words preview
merry
merrily
seize criterion
valid
file
adj. 愉快的；高兴的
adv.高兴地；愉快地
vt. 抓住；捉住；夺
n. 标准；尺度
adj. 有效的；确凿的
n. 文件；档案；文件夹
vt. 提交；把……归档

15. Expressions preview
call up
now and then
set about
给……打电话
偶尔；有时
开始；着手

16. Reading Comprehension II
Skimming
Reading Comprehension II
How many possible approaches did
the author decide on catching snakes?
A. Two B. Three
C. Four D. Five
2. The writer succeeded in catching the
snakes in the ______ attempt.
A. first B. second
C. third D. fourth

17. Read the passage quickly to find the main idea of each part.

18. Divide the text into four parts and work out the main idea for each part.
Part I
Part II
Part III
Part IV
(Para.1)
The discovery of the problem of the snakes.
(Paras. 2-3)
The research on the approaches to solve the problem.
(Paras. 4-6)
The attempts to catch the snakes.
(Paras. 7-8)
The requirement of getting a patent.

19. Scanning
to get
detail information

20. Reading Comprehension III
scanning
Reading Comprehension III
T or F
In this passage, the writer wants to encourage the readers to consider carefully the problems in daily life.
The writer was successful in catching the snakes in the second attempt.
An inventor can easily get the patent for the invention.
____
_____

21. 4. The writer collected the passive snakes at his third attempt.
5. If you have a scientific theory or mathematical model, you can get a patent(专利).
6. If your inventions pass the test, your application for a patent will be published 17 months from the date you apply.

22. Reading Comprehension IV
scanning
Reading Comprehension IV
How did the writer catch the snakes?
Using something to attract the snakes
into a trap.
B. Taking their habitat to another place.
C. Cooling the snakes so that they
became sleepy.
D. All the above.

23. 2. What instruments were used for catching the snakes. A
2. What instruments were used for catching the snakes? A. A bowl, ice-cubes, male perfume B. A bowl, a bucket, female perfume C. A small net, ice-cubes, a bucket D. A small net, a bucket, powders

24. 3. The biggest advantage of the writer's new idea is that ______. A
3. The biggest advantage of the writer's new idea is that ______. A. it makes the snakes move slowly B. it makes the snakes hardly bite us C. it is easier for us to kill the snakes without hurting ourselves D. it is easier for us to catch the snakes without killing them

25. 4. Which statement is true according to the text. A
4. Which statement is true according to the text? A. The snakes were so sleepy in the second attempt that they couldn't bite the writer at all. B. The author and her mother released the snakes quickly after catching them. C. Your product must be different from everybody else's if you want to receive a patent. D. A patent will be published 17 months from the date you apply.

26. 5. According to the text, which subject do you think can be given a patent? A. A new star discovered by a scientist. B. A new novel written by Huo Da. C. A new kind of grass found in a mountain which can be used as a medicine. D. A new way to make dirty water clean.