Celpip listening Practice

CELPIP Listening Practice 1- Section 4 - News
Listen to the following news item. You will hear the news item only once. It is about 1.5 minutes long.
In the real exam the questions pop up after listening to the track.
Now try to complete the following questions with the best answers.
1. Some contrails slowly move to form
observable in the sky.
2. Increasing number of the air travels has caused
in the atmosphere.
3. Is carbon dioxide the only pollutnat in the sky ?
4. When the news is most probably been published?
5. What has not been mentioned as one of the solutions ?