I. Complete the passage with according to the text
In the __1___ world , the Chinese Scientist ,Yuan Longping , is a leading figure . He was born in a poor farmer’s family in 1931. In 1953 he ___2__ Southwest Agriculture College.
Since 1953, he has ___3__ finding ways to grow more and more rice .He _4____ different types of rice. In 1970 he discovered a new hybrid rice by crossing different species of rice plant. This hybrid rice could produce a higher ___5__ than either of the original plants. ___6___ his discoveries , Chinese rice production __7___ 47.5 percent in the 1990’s.
Although he has been __8___ , he still keeps time for his hobbies such as playing violin , swimming and reading.
