Light is a complex phenomenon classically exp...

Light is a complex phenomenon classically explained with a simple model based on rays and wavefronts. Many of the aspects of light have been explored, but few people notice them happening in their real lives. For example, most of us observe some type of optical interference almost daily, but usually don't realize the events in play behind the ever-changing display of colors produced when light waves interfere with each other. One of the best examples of interference is shown by the light reflected from a film of oil floating on water. Another example is the thin film of a soap bubble, which reflects a series of light with beautiful colors when shined by natural or man-made light sources.

Electromagnetic radiation(电磁辐射）, the larger family of wave-like phenomena to which visible light belongs, is the primary vehicle transporting energy through the vast reaches of the universe. The means by which visible light is sent out or absorbed, and how it predictably reacts under different conditions as it travels through space and the atmosphere, form the basis of the existence of color in our universe. The human eye is sensitive to a form of electromagnetic radiation that lies in the wavelength range between 400 and 700 nanometers(纳米），commonly known as the visible light spectrum, which is the only source of color. When combined, all of the wavelengths present in visible light form colorless white light. Red, green, and blue colors are classically considered the primary colors because they are fundamental to human vision. Light is observed as white by humans when our eyes are affected by equal amounts of red, green, and blue light at the same time.

The concept of color temperature is of great importance in photography and digital imaging, regardless of whether the image capture device is a camera or a microscope. A lack of proper color temperature balance between the microscope light source and the image sensor is the most common reason for unexpected color shifts in photomicrography(显微照相术）and digital imaging. If the color temperature of the light source is too low for the film, photomicrographs will have an overall yellowish or reddish cast and will appear warm. On the other hand, when the color temperature of the light source is too high for the film, photomicrographs will have a blue cast and will appear cool. As problematic as these color shifts may seem, they're always easily corrected by the proper use of conversion and light balancing filters(滤光器）。

1.Which of the following is right according to the 1st paragraph of the passage?

A.Most of us aren't explicit about how colors are produced.

B.Light is classically defined in terms of rays and wavefronts.

C.People can understand optical interference by watching films.

D.Shined by natural or man-made light sources, films reflect a series of light.

2.What can we learn about electromagnetic radiation?

A.It moves in a straight line.

B.Color originates from it.

C.Green lights are not part of it.

D.Its wavelength can't be 500 nanometers.

3.The color shifts on photomicrographs__________.

A.are difficult to get right once formed

B.are caused by the high colors more often

C.prove that how important the color temperature is in imaging

D.are caused by the high color temperature of the light source

4.Which of the following would be the best title for the passage?

A.Light and imaging

B.Light and color

C.Light and temperature

D.Light and radiation

高二英语阅读理解中等难度题查看答案及解析

The professor explained this theory so clearly that this phenomenon was easy enough ________.

A. for us to work out    B. working out

C. for working out      D. to working out

高二英语单项填空简单题查看答案及解析

The professor explained this theory so clearly that this phenomenon was easy enough ________.

高二英语单项填空困难题查看答案及解析

阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。

A recent report published online explains an uncommon phenomenon why people from East Asia tend to have more trouble than those from Europe in identifying facial expressions.

Rachael Jack, University of Glasgow researcher, said that rather than scanning evenly (均匀地) across a face as Westerners do, Easterners fix their attention on the eyes.

“We show that Easterners and Westerners look at different face features to read facial expressions,” Jack said. “Westerners look at the eyes and the mouth in equal measure, whereas Easterners favor the eyes and neglect (忽略) the mouth.”

According to Jack and her colleagues, the discovery shows that human communication of emotion is more complex than previously believed. As a result, facial expressions that had been considered universally recognizable cannot be used to reliably convey emotion in cross-cultural situations.

The researchers studied cultural differences in the recognition of facial expressions by recording the eye movements of 13 Western Caucasian and 13 East Asian people while they observed pictures of expressive faces and put them into categories: happy, sad, surprised, fearful, disgusted, angry, or neutral. They compared how accurately participants read those facial expressions using their particular eye movement strategies.

It turned out that Easterners focused much greater attention on the eyes and made significantly more errors than Westerners did. “The cultural difference in eye movements that they show is probably a reflection of cultural difference in facial expressions,” Jack said. “Our data suggest that whereas Westerners use the whole face to convey emotion, Easterners use the eyes more and mouth less.”

In short, the data show that facial expressions are not universal signals of human emotion. From here on, examining how cultural factors have diversified these basic social skills will help our understanding of human emotion. Otherwise, when it comes to communicating emotions across cultures, Easterners and Westerners will find themselves lost in translation.

1.The discovery shows that Westerners_________.

A. consider facial expressions universally reliable

B. pay equal attention to the eyes and the mouth

C. observe the eyes and the mouth in different ways

D. have more difficulty in recognizing facial expressions

2. What does the underlined word “they” in Paragraph 6 refer to?

A. The participants in the study.

B. The researchers of the study.

C. The errors made during the study.

D. The data collected from the study.

3. In comparison with Westerners, Easterners are likely to_________.

A. do translation more successfully

B. study the mouth more frequently

C. examine the eyes more attentively

D. read facial expressions more correctly

4. What can be the best title for the passage?

A. The Eye as the Window to the Soul.

B. How to Increase Cross-cultural Understanding.

C. Effective Methods to Develop Social Skills.

D. Cultural Differences in Reading Emotions.

高二英语阅读理解中等难度题查看答案及解析

A new retail phenomenon from Japan which allows customers to walk away with free products is to launch in Britain. From tomorrow, visitors to SampleTrend’s central London store can try anything on its shelves, and all of the products can be taken home without charge.

For an annual membership fee of £60，users are free to enter the shop once a month and help themselves to no less than £250 worth of goods every year. The only ‘catch’ is that shoppers are asked to complete a simple questionnaire about each product they try. Known as ‘try-vertising’，the concept allows manufacturers to test products and receive consumer feedback(反馈）before launching onto the open market. It is already a sensation in Japan and now looks set to transform the fortunes of the embattled UK retail industry. If everything goes well, countries such as Germany and France will give it a try. According to new figures, stores are facing a Christmas crisis with the weakest high street trading for six months. Michael Ghosh, the founder behind SampleTrend, said, “The concept behind SampleTrend is unique in the UK. It allows shoppers the opportunity to walk away with a number of real, full-size products of their choosing without handing over a penny.” The concept of in-store try-vertising is simple but effective. Businesses across all sectors from cosmetic manufacturers to beverage makers, place new products on the shelves at SampleTrend and wait for consumers to try them out.

Customers complete a short 10-point questionnaire about the product. The feedback they provide is used to make any finishing touches before the product is brought officially to market. The SampleTrend store stocks everything from cosmetics, food and drink, and household goods. Ghosh, the former advertising and sales director for Disney Europe, said such feedback may also build brand loyalty from the outset— a particularly appealing prospect for new businesses.

1.The most attractive part of the idea for customers is that_____.

A. they only pay £60 for a life-long membership

B. they can help to make the products better

C. it won’t take much time to finish the questionnaire

D. they can take things home without paying for them

2.The idea of ‘try-vertising’ originates from_____.

A. Germany　　　　 B. Britain　　　　　 C. Japan　　　　 D. France

3.The purpose of ‘try-vertising’ is to_____.

A. get feedback for their new products

B. sell more products at Christmas time

C. encourage people to buy more products

D. give customers free products as gifts

4.What does Michael Ghosh think of this business idea?

A. Puzzling.　　　　 B. Unpractical.

C. Promising.　　　 D. Surprising.

高二英语阅读理解中等难度题查看答案及解析

The traditional approach ____ with complex problems is to break them down into smaller, more easily managed problems.

A. to dealing     B. in dealing      C. dealing        D. to deal

高二英语单项填空中等难度题查看答案及解析

Confronted with the complex international situation, we need a foreign policy that is more ____.

A．symbolic          B．confidential        C．controversial       D．flexible

高二英语单项填空中等难度题查看答案及解析

Many people believe that classical music has nothing to do with young people today. However, this issue(问题) frequently causes heated debate.

Some people say that classical music is associated only with old people. For example, if you look at the audience at a classical concert, the majority is over the age of fifty.

Others say it is more popular than we first imagine. Many young people listen to classical music without realizing it. It is often used in films and advertisements. For example, a famous piece of classical music was used as the theme music for the 1990 World Cup. Not many people could have given its name, but millions enjoyed it.

Also, some people point out that young people produce new music based on classical ideas: for example, it is said that rap(说唱) music was invented by a classical musician in 1912, but it is now used by young people in pop music.

However, young people point to the fact that classical music has been outstripped(超越) by technology. To play a classical instrument, such as a violin, you need to study hard and practice for hours. Nowadays, you don’t need to get aching arms from practicing. A teenager can write and make music using a computer program in the comfort of their own bedroom.

A final point to bear in mind is that the term "classical music" is used to refer to a great variety of music, from jazz to pieces for large orchestras. This makes it even more difficult to say whether classical music is relevant（与…相关） to young people.

So, it may be only a minority of young people who play classical instruments, but when it comes to enjoying classical music, it depends on the piece of music. It may be more relevant to young people in the modern world than they realize!

高二英语填空题中等难度题查看答案及解析

Culture in general is concerned with beliefs and values on the basis of which people explain experiences and behaviors, individually or in groups. Generally speaking, culture refers to a group or community with which you share common experiences that shape the way you understand the world.

The same person, thus, can belong to several different cultures depending on his or her birthplace, nationality, ethnicity, family status, gender, age, language, education, physical condition, religion, profession, place of work and so on.

Culture is often at the root of communication challenges. Exploring historical experiences and the ways in which various cultural groups have related to each other is important in opening channels for cross-cultural communication. Becoming more aware of cultural differences, as well as exploring cultural similarities, can help you communicate with others more effectively. Next time you find yourself in a confusing situation, ask yourself how culture may be shaping your own reactions, and try to see the world from the others’ point of view.

写作内容:

1. 用约30个单词写出上文概要;

2. 用约120个单词发表你的观点,内容包括:

1) 你如何看待文化多样性(cultural diversity) ?

2) 我们应该如何解决文化差异方面的问题 ?

写作要求：

1.在作文中可以使用亲身经历或虚构的故事，也可以参阅材料的内容，但不能直接引用文中原句。

2.不必写标题。

3.不能出现真实姓名和班级。

高二英语书面表达中等难度题查看答案及解析

The patent officer ______ with my file explained to me that a plant variety is not a/an _______ invention as it is a result of adjusting growth scientifically.

高二英语单项填空困难题查看答案及解析