含有蒽醌的中草药是
A．大黄 B．薯蓣 C．洋地黄 D．人参 E．黄连
参考答案：A
Something is wrong with my PDA.I will get it ___________ .
A. repair B. repairing C. to repair D. repaired
Everyone should learn something about first aid, for every second will_______in an emergency.
A． play
B．count
C． happen
D． show
