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2. Listen and choose. 听一听,选一选。
(
(
(
(
(
A. 8 hours
B. 12 hours
C. 24 hours
(
B
) (1) Where does Sue want to live in the future?(
A
) (2) How will people travel?(
C
) (3) How will people see underground?(
A
) (4) What are they talking about?(
C
) (5) How long will the big lights stay on?A. 8 hours
B. 12 hours
C. 24 hours
答案：
（1）B （2）A （3）C （4）A （5）C
1. Listen and number. 听一听,写序号。
4 2 3 5 1 6
答案：
4 2 3 5 1 6
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