and other areas.Hybrid grains that cannot easily be killed by insects and diseases would be useful around the world.

　　LEARNING ABOUT LANGUAGE

　　Discovering useful words and expressions

　　Answers to Exercise 1：

　　1 sunburnt　2 rid...of　3 expand　4 circulate　5 would rather　6 struggle　7 export

　　8 satisfied with　9 equip　10 crops　11 thanks to

　　Answers to Exercise 2：

　　1 statistics，globe　2 super，nationalities 3 Hunger，disease　4 Vietnam，occupations　

　　5 freedom，exported

　　Answers to Exercise 3：

　　decade，struggle，expanding，Equipped，output，grain，crops，battles，disturbing

　　Discovering useful structures

　　Answers to Exercise 1：

　　Subject：Since then，finding ways to grow more rice has been his life goal.

　　Object of preposition：As a young man，he saw the great need for increasing the rice output.

　　Object of preposition：Yuan Longping searched for a way to increase rice harvests without expanding the area of the fields.

　　Object of verb：He enjoys listening to violin music，playing mah­jong，swimming and reading.

　　Subject：Spending money on himself or leading a comfortable life also means very little to him.

　　Subject：Just dreaming for things，however，costs nothing.

　　Object of preposition：He awoke from his dream with the hope of producing a kind of rice that could feed more people.

　　Answers to Exercise 2：

　　1 Helping people in need of help is nice.

　　2 Growing super hybrid rice is not easy.

　　3 Learning more about farming is not difficult.

　　4 Doing research in the countryside is not as easy as in the city.

　　5 Getting rid of hunger is very important for some African countries.

　　6 Explaining this again is important or we will confuse the students.

　　Answers to Exercise 3：

　　1st group：to do

　　2nd group：doing

　　1st group：promise，fail，hope，afford，plan

　　2nd group：enjoy，finish，mind，miss，keep

3rd group：try，stop，begin，forget，like，start