用如图装置制取少量某无色非金属氧化物气体，则锥形瓶X内的药品应是（ ）
A．铜和稀硝酸
B．铜和浓硝酸
C．碳酸钙与稀硫酸
D．亚硫酸钠和浓硫酸
答案：D
Go about your business your own way. Don't _____what others think or say. [ ]
A. care for
B. care about
C. care with
D. care of
't _____what others think or say. [ ]