东北地区是粮食集中产区，其主要粮食作物是（ ）
A．水稻
B．冬小麦
C．春小麦
D．谷子
春小麦春播秋收，分布在长城以北，主要分布在东北平原．
故选：C．
—How did I do on ________ test?
—Well，actually you didn't do very well. I wonder if you had had ________ good review of your lessons.
A．a；a
B．the；the
C．a；the
D．the；a
一般病室冬季的温度是( )
A．15～17℃ 30%～40%B．16～18℃ 40%～50%C．18～22℃ 50%～60%D．20～22℃ 50%～60%E．22～24℃ 50%～60%
