阅读理解。 Do you see many signs around you? Do you know the signs are an important part of our daily life? They can be in pictures or in words to give people information. What do people think are good signs? If you are thinking about making signs for others, what should you know? The most important thing is that signs should be simple and easy to understand. It is important to use clear language. On the other hand, the words should be easy to write and you just need to write down what you want to do. 'Keep off the grass' is a very good example. It means 'Don't touch or walk on the grass'. Nowadays, there is a saying that 'A picture paints a thousand words'. Perhaps that's why we are seeing more and more signs in pictures, or a combination of pictures and words. However, that's the difficult part, because picture signs may have different meanings in different countries. 1. First, a good sign should be ____. [     ] A. clear B. beautiful C. funny D. interesting 2. The writer uses 'A picture paints a thousand words' to show that ____. [     ] A. a word sign is as easy as a picture sign to make B. a picture sign often has more information than a word sign C. a word sign has more information than a picture sign D. a word sign and a picture sign have the same information 3. What does the underlined word 'combination' mean? [     ] A. 分开 B. 结合 C. 并列 D. 平行 4. What is the disadvantage (不利因素) of picture signs? [     ] A. They are too simple. B. They are not easy to understand. C. They are not as interesting as word sign. D. They may have different meanings in different countries. 5. What's the best title of the passage? [     ] A. Word Signs B. Picture Signs C. The History of Signs D. Signs Are Important