3 Read the information again and complete the following summary.
The economies of most cities are based on
manufacturing and ?
Services include public
administration, health care, 3 and 4
Global cities are important world 5 centres.
They have large ... populations. ? have their
headquarters there. They are cultural centres
with 8 art galleries and
9

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English is the most popular language in the world.
Millions of people all over the world speak English.
Scientists and writers try to write or to have their works translated into English so that more people could read them.
Most conferences and international meetings are held in English.
English is not only popular, it is not very difficult to learn.
English grammar is not very difficult and many words are already known to most of us. 
Knowing English gives better job and education opportunities.
The best universities teach in English.
Whatever country you go, you will certainly meet somebody who speaks English.
English is very popular with singers and performers.
There are many special texbooks, aidio and video resources for those who learn English.
So learning English can really be fun and a great enjoyment.

In my opinion, it is very important to study foreign languages. There are lot of reasons. First reason is that knowledge of a foreign language can boost your future career development. Second reason is to feel comfortable in everyday life and while travelling. We live in a global society and one language is not enough nowadays. The best choices now will be English and Chinese languages because English language has become an international language and Chinese language is the most used and spoken nowadays.