UNIT 10. SPACE TRAVEL
(Du hành không gian)
GETTING STARTED
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
A CLOSER LOOK 1
14.
15.
16.
17.
18.
A CLOSER LOOK 2
19.
20.
COMMUNICATION
21.
22.
SKILLS 1
23.
24.
SKILLS 2
25.
26.
LOOKING BACK
27.
28.
PROJECT
29.
