① Don’t talk We are trying (do) homework.

5. 你在中国待了多长时间了？

 have you in China?

4. 你品尝过中国食物吗？

you Chinese food?

3. 你看过兵马俑吗？

you the Terracotta Army?

2. 你去过长城吗？

you to the Great Wall?

1. 你参观过故宫博物院吗？

you the Palace Museum?

the Terracotta Army,the Great Wall,the Bird's Nest,the Palace Museum

1. 2. 3. 4.

              be,get,make,become,change 

   Since 1946,computers 1 our lives. The first computer was invented in 1946. It was as large as a room and very difficult and slow to use. But since the invention of “silicon chip”(桂片) ，computers 2

smaller,easier and faster to operate. Some computers are as small as TV sets. Some can 3 smaller than a book. And computers are 4 smaller and smaller all the time. Who knows what the computers of tomorrow 5 like? 

1. 2. 3.

4. 5.

5. improve? why,you,do, English,want,to, your (连词成句)

4. The computer can play chess better than humans. (改为同义句) 

Humans can't play chess the computer.