含罂粟壳不宜久服的中成药（）。
A.川贝止咳露
B.强力枇杷露
C.蛇胆陈皮胶囊
D.止咳橘红丸
E.二母宁嗽丸
参考答案：B
―How are things going?
―The disabled _______ no relatives in Guangzhou _______ by the volunteers, who will graduate from Zhongshan University next year.
A．with; are taking care of
B．have; will be taken care of
C．with; are being taken care of
D．have; are being taken care of
机械式的时间继电器的延时可通过改变磁阻的大小，如果要加大延时，就应（）。
