a÷1=a（元）；
答：苹果的单价是a元．
故判断为：×．
Christmas因子的编码序号为
A．FⅤ
B．FⅨ
C．FⅦ
D．FⅩ
E．FⅪ
She walked slowly away, and he waited until she was out of（）before going back into the house.
A.reach
B.sight
C.touch
D.mind
