题目内容：

There are about 5,000 different languages. Nearly 900 languages are spoken in India.    1.  .

Chinese is the language spoken by the most number of people in the world. But the most widely spoken language in the world is English. 330，000，000 people speak English as the first language.

2.    as a foreign language. Travelers and business people all over the world use English. And two thirds of the world’s scientists read in English. About 200 million users of the Internet communicate in English, too. It is one of the most important  language in the world.   3.    .

How many words are there in the English language? There are about 490,000. Also, there are about 300,000 words used in science. There are more words in English than in any other language. But most people use no more than 60,000 words.

It’s true that English is changing with the development of the world. Since the 1990s, English learning has been very popular with Chinese people. Many of them have done well in English and have made great progress. 

Now,    4.   and the study of English is regarded as a very important industry in China as well as in the rest of the world. Children leaving school at the age of 16 know about 15,000 words.