单项选择题
A．the life span of trees B．the age of redwoods C．making trees grow quickly D．cutting trees for lumber
A．hazy because of dust in the air B．clearer because air pressure is high C．clearer because air pressure is dropping D．distorted because of storm clouds
A. I prefer the leather one B. What do you like C. It looks warmer D. clerk E. It sounds nice F. price tag G. to try it on H. Which one do you like better