苹果在北方生长得好，而在南方生长不良，造成这一现象的是主要原因是 [ ]
A．湿度
B．土壤
C．空气
D．温度
答案：D
This book_______a true story of how one person can make a difference in the lives of other people.
A．will tell
B．has told
C．tells
D．told
博物馆的类型
