1 is a kind of sandwich made of a piece of meat inside a 2 bun. A lot of people in the world think hamburgers are 3 . Today, hamburgers are one of the most 4 foods in the world. The most famous hamburger should be the "Big Mac". Every year, about 550 million Big Macs are 5 in the U.S.
举一反三
- Every year, about six million people die from smoking-related diseases in the world, ______ one million in China, according to the WHO.
- How much oil does the Middle East produce today A: most of the world's oil supplies. B: 2/3 of the world's oil supplies. C: 1/3 of the world's oil supplies. D: 1/4 of the world's oil supplies.
- Oxford University is one of the most prestigious universities in the world. A: big B: precious C: famous D: professional
- R2：Fish and chips, hamburgers, and Chinese foods are the most common take-away foods in Britain.
- There are over _______ languages in the world. Most people agree that there are about _______ important languages in today's world.