2019-2020学年度第33-38期总第787-791期
Seeing the world’s full beauty (P48)
山东省烟台第二中学 赵霞

Lead in

Common Knowledge Quiz
1. How many different colors can most humans recognize?
About 1 million different colors!
2. If someone can’t see as many colors as others, what kind of conditon might he or she suffer from?
Colorblindness
3. How can we treat this condition?
Wearing color-correcting glasses.

Let’s read the passage and find out if there are more advanced products that can fix colorblindness.

Read for main idea
What is the main idea of the article?
Engineers apply the technology of color-correcting glasses to create special contact lenses that can fix different kinds of visual impairments.

Read for detailed information

Read the passage again and answer the following questions.
1.  How is colorblindness usually corrected?
2.  What is the new method of treating colorblindness?
3.  What is the difference between glasses and contact lenses?
4.  What makes the creation of the special contact lenses significant?

1. How is colorblindness usually corrected?
   People wear color-correcting glasses.

2. What is the new method of treating colorblindness?
People can wear customized contact lenses designed by engineers who applied the same technology used in the color-correcting glasses.
customized  adj.订制的，订做的（以满足顾主的需要）

3. What is the difference between glasses and contact lenses?
Color-correcting glasses are commercially available but significantly bulkier.
Contact lenses can be customized, compact and durable.
significantly bulkier 明显更笨重一些
commercially available 市场上能买到的
compact  adj. 紧凑的；简便的
durable adj. 耐用的；持久的

4. What makes the creation of the special contact lenses significant?
The creation of special contact lenses gives people who are colorblind a choice as to how to fix the condition.

Language and grammar

1. People are able to see color because of how the eye is structured.
how引导的是宾语从句，做介词of的宾语
人们能够看到颜色是因为眼睛的构造。
Problems with distinguishing red from green can interrupt simple daily routines such as deciding whether a banana is ripe.
whether引导的从句做decide的宾语
无法区分红色和绿色影响简单的日常生活，比如，判断香蕉是否成熟。

Test yourself
a. It depends on _______ we solve the problem.
b. We are worrying about _______ we should do.
c. They couldn’t understand _______ I refused it.
d. The problem is _______ we should stay.
Keys: 1. how; what; why; where

2. Whether you prefer to wear glasses or contacts, it’s nice to know that people who are colorblind will soon be able to choose between the two.
 Whether意为“不管，无论”，引导让步状语从句
无论你是喜欢戴眼镜还是隐形眼镜，得知色盲患者不久也能在这两者之间做出选择，都是让人高兴的。

Test yourself
_______ you believe it _____, it is true.
无论你是否相信，它都是真的。
Look, Kate, I’m calling the doctor, ______ you like it _______.
喂，凯特，我要打电话叫医生来，不管你愿 不愿意。
Keys: Whether ; or not; whether; or not

非谓语动词
3. Well, some people can’t recognize this many because of something called colorblindness.
   Now, according to new research published in Optics Letters, scientists have brought this solution one step further.
   When light waves are absorbed, the cells send a message to the brain for the image to be processed.

Feedback
If you were colorblind, would you prefer to wear glasses or special contacts? Why?