与芒硝泻下作用速度有关的因素是
A．进食量
B．饮水量
C．体重
D．性别
E．机体机能状态
参考答案：B
413里面有几个59？
She is very hard-working, _____ he is very lazy.[ ]
A. when
B. that
C. which
D. while
