Questions 1 to 2 are based on the new report you have just heard.Question 1 What has caused the thick clouds in the photos taken by a NASA satellite?
A. Warm currents in the ocean
B. Ship traffic in the Atlantic
C. Particles emitted by power plants
D. Exhaust from cars in Europe
Question 2 What do NASA officials think about the thick clouds?
A. They need to be taken seriously
B. They have a huge effect on fishery
C. They may be affecting the world's climate
D. They might be causing trouble to air flights
Question 3 For what purpose did this staff at a supermarket in Melbourne sign a letter?
A. To appeal for higher wages
B. To demand better health care
C. To dismiss the bad-tempered supervisor
D. To call for a permanent security guard
Question 4 What did the spokesman of the supermarkets say regarding the employees demand?
A. It was seeking help from the police.
B. It would put customers’needs first
C. It had already taken strong action
D. It would take their appeal seriously
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