单项选择题
A. will be a great benefit to lumber companies B. make extra-good lumber for buildings C. will probably be weak because of their fast growth D. may be defenseless to many insects and diseases
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
A. the relation between social class of the parents and their children’s rearing B. the similarities between working class and middle class parents C. the differences between children of working class and the ones of middle class D. the relation between working class and middle class in their working places