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必修4 Unit 1
重点句子
1.????? She spent years observing and recording their daily activities.
2.????? Only after her mother came to help her for the first few months was she allowed to begin her project.
3.????? It seem that she had been very busy in her chosen career, traveling abroad to study as well as writing books and articles.
4.????? Further reading made me realize that it was hard work and determination as well as her gentle nature that got her into medical school.
5.????? Watching a family of chimps wake up is our first activity of the day.
6.????? This means going back to the place where we left the family sleeping in the tree the night before.
7.????? It was unusual for a woman to live in the forest.
8.????? Her work changed the way people think about chimps.
9.????? She actually observed chimps as a group hunting a monkey and then eating it.
… helped her work out their social system.
However the evening make it all worthwhile.
We watch the mother chimp and her babies play in the tree.
必修4?Unit?2?重点句子
1.????? Dr Yuan Longping grows what is called super hybrid rice.
2.????? The special strain of rice makes it possible to produce one-third more of the crop in the same field.
3.????? Dr Yuan searched for a way to increase rice harvests without expanding the area of the fields.
4.????? Dr Yuan is quite satisfied with his life.袁博士对生活非常满足。
5.????? Using his hybrid rice ，farmers are producing harvest twice as large as before
6.????? … planting peanuts that use the ground’s surface followed by vegetables that put down deep roots.
7.????? Some organic farmers prefer planting grass between crops to prevent wind or water from carrying away the soil, and then leaving it in the ground to become a natural fertilizer.
8.????? This also keeps the air, soil, water and crops free from chemicals.
9.????? In addition, fruit, vegetables and other food grown with chemical fertilizers usually grow too fast to be full of much nutrition.
10.? One dream is not always enough, especiall
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