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Before the journey, We must learn some knowledge about the space and pass some tests.
Unit 2 We have not found life on any other planets yet .
Our happy journey about the space knowledge.
Test 1:
Put the words and phrases in the order (small---big)
1
2
3
4
earth, universe, Milky Way, solar system
2 solar system
1 earth
3 Milky Way
4 universe
Test 2: Read quickly and match :
Paragraph 1 _______________
Paragraph 2& 3 _______________
Paragraph 4 _______________
Paragraph 5 _______________
The scientists’ progress (进程)
B. The scientists’ questions
C. The solar system and the universe
D. The life on earth and other planets
A
B
C
D
Reading tip1: key words
1. Anyone out there?
2. Life on the earth