11．_________      12．_________     13．_________     14．_________     15．_________

6．_________       7．_________       8．_________       9．_________       10．_________

     Yuan Longping is called the "Father" of Hybrid Rice. He and other Chinese scientists w 6   on this idea in the 1960s and 1970s. The first hybrid rice a   7   in 1974. By 1995, half of all the r  8  grown in China was hybrid. People a  9   over the world eat  rice. Rice is a kind of grass. There are more than 7, 000 kinds of rice. Most kinds of rice

are w 10  plants, so they grow in wet places. Farmers g 11  rice in many countries e  12  in the south of the United States and in eastern Australia.

     China is the world's largest rice - growing country. In 2003, China grew 166 million tons of rice.

B  13   it is still not easy to feed the world' s largest population. In the 1970s, Yuan Longping, the Chinese s  14 ,  grew a new kind of rice c  15  "hybrid rice". It makes 20% more rice than any other k 16   Hybrid rice is a s  17  plant, unlike ordinary （普通的）rice. It can grow in lots of water or in not much water. It doesn't easily g  18   diseases or worms.

     Chinese farmers use Yuan's hybrid rice to grow m  19  more rice than before. He won the World Food Prize for his work to help f  20  so many people.