自主预习详细解答过程和答案
1、hybrid
2、agriculture
3、happened
4、present
5、contribution
6、advantages
7、increased
8、Production
9、hunger
10、development
随堂反馈第1题详细解答过程和答案
1、People call him Father of Hybrid Rice.
2、He worked as a teacher.
3、Because he saw people die ofhunger.
4、It produced 20% more rice per unit than other common kinds.
5、He has solved the problem of hunger for many people.
随堂反馈第2题详细解答过程和答案
1、In the old days,the old man's father died ofhunger and cold.
2、The newcomers have some big advantages over the old companies.
3、The problem is whether the film is worth seeing.
4、He has made contributions to world peace and development.
5、The factory must aim to increase production.
课后巩固第1题详细解答过程和答案