1 . 听下面一段独白，回答小题。
1. Which one is the concern of Beijing residents?

A．Living conditions.

B．Traffic.

C．Energy waste.

2. What is the percentage of people who have taken part in environmental protection?

A．97.09%.

B．82%.

C．31.1%.

3. What kind of passage have you just heard?

A．A news report.

B．A college lecture.

C．A personal experience.