3题。 1. When was it unusual to see a plane? A. In the early 1

2014-04-09 

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听下面一段材料，回答第1-3题。

i/yingyu/61235/">1. When was it unusual to see a plane?

A. In the early 1960"s
B. In the 16th century
C. In the early 1900"s

2. Why can we use electric lights?

A. Someone has paid for us.
B. We have more money than before.
C. Someone invented ways to make use of electricity.

3. What are the speakers talking about?

A. The changes of life.
B. The history of planes.
C. The invention of electric lights.

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