一、默写单词。
1. 竹，竹子
2. 昂贵的，价格高的
3. 困难的
4. 研究，调查
5. 年龄，年纪
6. 丝绸
7. 纸，纸张
8. 凉快，凉爽

1. bamboo 2. dear 3. difficult
4. study 5. age 6. silk 7. paper
8. cool

二、根据中文意思，补全句子。
1. 蔡伦是中国一位伟大的发明家。
Cai Lun was a .
2. 他坚持思考，不断尝试。 He and .
3. 蔡伦想要用便宜的东西来造纸。
Cai Lun wanted to make paper.
4. 在那时，人们经常在竹子或者丝绸上写字。
, people often on or .

1. great Chinese inventor 2. kept thinking; trying 3. use cheap things to
4. At that time; wrote; bamboo; silk

三、王先生去湖南隆平水稻博物馆参观，小向导 Lily 热情地介绍了袁隆平爷爷的伟大贡献。 我们一起连词成句，简单回忆爷爷伟大的一生。
Lily: 1. .（a，was，rice，Yuan Longping，Chinese，scientist）
Mr Wang: What were his dreams?
Lily: 2. .（rice，and，cool，plants，see，hybrid，all，the，world，he，to，wanted，under，over，enjoy，the，rice，tall，grow）
Mr Wang: How did his dreams come true?
Lily: He studied farming，began to work on hybrid rice and never gave up. 3. .（rice，he，hybrid，1973，developed，in）4. .（over，feeds，the，now，world，people，it，all）
Mr Wang: Why was he great?
Lily: 5. !（worked，because，hard，he，and，so helped，people，many）

1. Yuan Longping was a Chinese rice scientist 2. He wanted to enjoy the cool under tall rice plants and see hybrid rice grow all over the world 3. He developed hybrid rice in 1973 4. Now it feeds people all over the world 5. Because he worked hard and helped so many people