2020-2021学年牛津上海版高中一年级第一学期Unit 1 Body language 语言点课件

In summer we feel cool on the streets when the streets are lined with trees. Three trees can do the job of _______ air-conditioners running all day. A. 5 B. 15 2. Plants can absorb CO2, and release O2. A man every day breathes in ____ O2, and breathes out _____ CO2. A. 750g/1000g B. 1000g/750g B A U-3 Reading by Jane 3. 5 hectares of trees could produce enough oxygen to keep _____ alive and healthy for a year. A. 24 B. 48 4. When we touch the leaves of mimosas (含羞草)， their leaves will shut. If their leaves shut quickly, it means the weather will be _____. A. rainy B. sunny B B U-3 Reading by Jane 5. Smell of some flowers and plants can drive off insects. *The smell of cucumbers can drive off _____. *The smell of onions and tomatoes can drive off______. *The smell of jasmine flowers can drive off______.