The author mentioned a white granular powder that falls like snow. What do you guess it is?
A. It might be the salt that workers sprinkled on the street during cold days.
B. Probably it is the remains of pesticides or other deadly chemicals.
查看答案
White granular powder had fallen upon the roofs and the lawns, the fields and streams some weeks before.
A. 对
B. 错
The white granular powder was spread by people themselves.
A. 对
B. 错
Actually, the misfortunes have happened somewhere in the world.
A. 对
B. 错
People know clearly of what they should do nowadays.
A. 对
B. 错