【简答题】A.Why fog freezes at low temperatures. B.How very small droplets can form. C.Why the density of fog varies. D.How water droplets stay suspended in air.
【简答题】Why
did Lemieux live in a van?A. He
had no other place to live in. B. He
wanted to save money. C. He
enjoyed this kind of life. D. He wanted to pay off his debts.