注射液配制所用溶剂是
A．制药纯水B．自来水C．灭菌注射用水D．注射用水E．饮用水
参考答案：D
While income worry is _______ rather common problem of the aged, loneliness is another problem that ________ aged parents may face.
A．a; 不填
B．the; 不填
C．a; the
D．the; the
已知函数f(x)=loga|x|在(0，+∞)上单调递增，则f(-2)（ ）f(a+1)．(填写“＜”“=”“＞”之一)
