高中英语必修四课文语法填空unit1-5.ppt

* Nobody before Jane fully understood chimps behaviour. She spent years observing and_1________ (record) their daily activities. Since her childhood she had wanted to work with animals in_2_____ own environment. _3__________, this was not easy. When she first arrived in Gombe in 1960, it was unusual for a woman_4________ (live) in the forest. Only her mother came to help her_5_____the first few months was she allowed to begin her project. Her work changed the way people think about chimps. For example, one important thing she discovered is _6_______ chimps hunt and eat meat. Until then everyone had thought chimps ate only fruit and nuts. She actually observed chimps as a group_7_______(hunt) a monkey and then eating_8______ . She also discovered that chimps communicate _9______ each other, and her study of their body language helped her to work _10______ their social system. to live However their that hunting for recording Unit1 课文语法填空 it with out Dr. Yuan was born in Beijing in 1930. _1______he graduated from Southwest Agriculture College in 1953, he has devoted his life to _2___________ (find) ways to grow more and more rice. As a young man, he saw the great need for _3______________ (increase) the rice output. At that time, hunger was_4______ serious problem in many parts of the country. Dr. Yuan searched _5_________ a way to increase rice harvests without expanding the area of fields. In 1950, Chinese farmers could only produce fifty million tons of rice. Last year, _6________, nearly two hundred million tons of rice _7_________________ (produce). These increased harvests mean _8________ 22% of the world’s people are fed from just 7% of the farmland in China. Dr. Yuan is now circulating his knowledge in India, Vietnam and other less developed countries to increase their rice harvests. Thanks to his research, the UN is trying to rid the world_9_______hunger. Using his hybrid rice farmers are producing harvests twice _10________large as before. a in