答案：A．1.做研究　2.从......毕业　3.寻找　4.关心；在意　5.很久以前

B．1.thanks to　2.be satisfied with　3.would rather

4．rid...of

三、阅读课文A PIONEER FOR ALL PEOPLE，回答下列问题

1．Why has Yuan Longping struggled for many years?

A．He wants to become one of the top scientists.

B．He wants to prove farmers can also become scientists.

C．He wants to do something for the farmers.

D．He wants other countries to know him.

2．When did he begin to make a study of the ways to increase the rice output?

A．More than 60 years ago.

B．More than 50 years ago.

C．About 40 years ago.

D．About 30 years ago.

3．When Yuan Longping was a young man，______.

A．many people in the countryside didn't have enough food to eat

B．all the people in the countryside were living a happy life

C．no one in the cities was able to help the poor in the countryside

D．he didn't like the life in the countryside

4．From the passage we can know that Yuan Longping's hybrid rice ______.

A．helps the farmers produce larger harvests

B．can be only grown in China

C．is not accepted by the United Nations