精 讲 点 拨 条分缕析

　　整合讲练 话 题 诵 读

　　1 考 题 对 接

　　2 基 础 回 顾 3 课后强化作业

　　5 精 讲 点 拨

　　4 话 题 诵 读 早读一刻

　　情感体验 考 题 对 接 真题链接

　　体会考点 基 础 回 顾

　　稳扎稳打

　　网络构建

　　必 修 2

　　Units 3～Unit 4

　　Wildlife protection

　　Back from the dead: One third of “extinct”

　　animals turn up again

　　Conservationists are overestimating the number of species that have been driven to extinction, scientists have said.

　　A study has found that a third of all mammal(哺乳动物)species declared extinct in the past few centuries have turned up alive and well.

　　Some of the more reclusive(隐居的)creatures managed to hide from sight for 80 years only to reappear within four years of being officially named extinct in the wild.

　　The shy okapi—which resembles a cross between a zebra and a giraffe—was first discovered in the Democratic Republic of Congo in 1901.

　　After increasingly rarer sightings, it vanished from the wildlife radar for decades from 1959, prompting fears that it had died out.

　　But five years ago researchers working for the WWF found okapi tracks in the wild.

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