Unit 4 Period One(1).doc
Unit 4 Period One(2).doc
Unit 4 Period Three.doc
Unit 4 Period Two.doc
单元检测(四).doc
Unit 4 Astronomy:the science of the stars
Period One Warming Up & Reading (Ⅰ)
基础落实
Ⅰ.课文理解
1.Why was the earth different from other planets?
A.Because it produced a lot of heat.
B.Because the water remained.
C.Because the water disappeared.
D.Because it was the oldest planet.
2.Why was life able to d...