阅读理解。 There are more than 3000 languages in the world today, but only about ten are major languages of the world. Among them English is the most popular. More than 350 million people speak English as their first language. Major English-speaking countries are Britain, Australia, New Zealand, Canada and the USA. Another 400 million speak it as a second language. No one knows how many people speak English as a foreign language. They usually learn English as a school subject instead of learning it from their parents. Chinese is the only language with more speakers than English. This is because of the large population of China. English is the language for a better understanding between peoples of the world. It is also the language for business and science. Nearly half of the business deals in Europe are done in English, and more than half of the science magazines are in English. English is widely used in the world's computer network. And children should begin with English when they learn how to use computers. Through the English language peoples of different countries are able to work together and make things even better. 1. English is the most popular language in the world because _____. [     ] A. it has the largest number of speakers B. it is widely used C. it is an international language D. it is a language for world use 2. The world's computer network takes English as _____. [     ] A. its only language B. one of the main languages C. a school subject D. a foreign language 3. If you wnt to learn how to use computers, you should _____. [     ] A. speak English well first B. work together with foreigners C. learn English first D. make things better 4. If you know English, you'll be able to _____. [     ] A. do everything better than before B. understand what people from different countries say C. read nearly all the science magazines in the world D. read many science magazines in the world 5. The main difference between first language and second language is _____. [     ] A. first language is important B. first language is learned from parents C. second language is learned at school D. Both C and D.