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Artificial lights can secure people’s safety in cities.
B. Lights make the view of universities more beautiful.
C. LED lights tend to use less energy than other lights.
D. Artificial lights in the city endanger people’s health.

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A. They can help reshape ecosystem.
B. They are comparatively more expensive.
C. They are vastly deployed in 16 countries.
D. They are a major source of light pollution.

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Questions 7 to 8 are based on the passages you have just heard.

A new technology to produce clean energy.
B. A new idea on ecosystem improvement.
C. A new chemical to better utilize sunlight.
D. A new method to ease global warming.

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A. Some think it is impractical.
B. Some think it should be banned.
C. Some think it may threaten planes.
D. Some think it can reduce droughts.

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Long conversations. Questions 9 to 12 are based on the conversation you have just heard.[音频]

A. How much money can a teacher earn?
B. What kind of career should she have?
C. Who is the man’s favorite granddaughter?
D. Why did the man choose to be a teacher for life?

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Listen to the recording

Artificial lights can secure people’s safety in cities. B. Lights make the view of universities more beautiful. C. LED lights tend to use less energy than other lights. D. Artificial lights in the city endanger people’s health.

Listen to the recording

Questions 7 to 8 are based on the passages you have just heard.

Listen to the recording

Long conversations. Questions 9 to 12 are based on the conversation you have just heard.[音频]

Artificial lights can secure people’s safety in cities.
B. Lights make the view of universities more beautiful.
C. LED lights tend to use less energy than other lights.
D. Artificial lights in the city endanger people’s health.