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必修4《Learning about Language》新课标PPT课件优质课下载
What do you know about farming?
Have you ever grown any plants?
If so, what did you do to grow them?
If not, what kind of plant would you
like to try growing? How would you
grow it?
ploughing（犁田）
seeding （播种）
fertilizing
(施肥)
Irrigating(灌溉)
transplanting （移植）
Harvesting （收获）
winnowing (扬谷)
辣椒
杂交棉
杂交梨
重穗型超高产杂交稻
杂交甜椒
杂交茄子
杂交玉米
Have a rest.