图文配对,把序号写在括号中。 ( ) 1. Welcome to China. A. ( ) 2. It's Christmas Day. B. ( ) 3. This is the national flag of Canada. C. ( ) 4. It's summer in China but winter in Australia. D. ( ) 5. People use knives and forks in western countries. E. ( ) 6. My father visited the USA last month. F.