Li Shizhen was born in Hubei Province. His father was a doctor. He learned a lot about medical herbs（草药）from his father and read many medical books. At the age of 23 he became a doctor. He often treated（治疗）poor people’s illness, so many peasants and fishermen made friends with him.
The year he was 35 Li Shizhen began to write the COMPENDIUM OF MATERIA MEDICA. He walked all over famous mountains which grew medical plants to learn their shapes（形状）, the conditions in which they grew and collected all sorts of specimens（标本）. He spent 27 years in writing the book.
THE COMPENDIUM OF MATERIA MEDICA with over 1,000,000 words, describes（描述）1,800 kinds of medical plants. When the work had just been ready for printing and publishing（出版）, Li Shizhen passed away.
The COMPENDIUM OF MATERIA MEDICA introduces not only medical herbs growing China but also many foreign medicines. After its publication the books reached foreign countries. It was translated into English, French, and Russian and became an important piece of literature in international medical research.
61. Why did many peasants and fishermen make friends with Li Shizhen? Because
he __________.
A. was much concerned（关心）for the poor B. had a sweet manner
C. was a famous doctor D. read many medical books
62. His Compendium of Materia Medica describes __________.
A. over 1,000,000 words B. 1,800 kinds of medical stories
C. a lot of medical work D. many foreign medical stories
63. Before his book could be____________he had died.
A. printed and published B. introduced abroad
C. translated into foreign languages D. completed finally
64. The word “literature” in the article means __________.
A. work of different science B. letters from foreign countries
C. hope for the better future D. books on a special subject
65. What’s the Chinese name of the COMPENDIUM OF MATERIA MEDICA?
A. 本草钢目 B. 四库全书 C. 天工开物 D. 齐民要术
，式中a为产量，L和K分别为不同的生产要素，设L和K的投入价格为PL=50元，PK=80元，试求：