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重庆大学版（必修）英语5二年级《Theme B Society and Nature Our Planet Unit 4 Living Planet Reading Our Earth》优秀教案设计
Teaching Procedures:
1. words review
to become smaller, or to make something smaller
v.收缩，使皱缩 shrink
at a greater distance from the centre
adj.外部的，外面的 outer
of or from the sun, or using the energy from the sun to produce electric power
adj.太阳的，日光的 solar
to become level or cause something to become level
vi.变平，变单调 flatten
to become larger and rounder than usual; to (cause to) increase in size or amount
v.鼓起，肿胀 swell
someone who climbs mountains for sport
n.爬山者，攀登者 climber
to move upwards
n.上升 rise
2 Phrases:
at least 至少
above the level of the sea 海平面以上
far away 遥远，深远
be covered with/by 被……所覆盖
make up 形成，构成或组成某物
play a role in 在……方面起作用
Read the text to get the main idea of the passage and read it again to finish Ex. 1-3.We should give students enough time to understand and digest the contents of the passage.
Choose the best answer to complete each of the following sentences.