石榴皮的功效是
A．益气，除热止汗
B．补脾止泻，益肾
C．补肾助阳，固精
D．涩肠止泻，杀虫
E．涩肠止泻，行气
参考答案：D
He _____ without saying good-bye to them, for he always has good manners.
A．mustn’t have left
B．may not leave
C．shouldn’t have left
D．can’t have left
东北平原的主要粮食是（ ）
A．高粱、大豆、春小麦
B．玉米、冬小麦、水稻
C．玉米、春小麦、水稻
D．冬小麦、甜菜、棉花
He _____ without saying good-bye to them, for he always has good manners.