下列何种降血糖药易引起乳酸血症（）。
A.正规胰岛素
B.阿卡波糖
C.格列本脲
D.甲苯磺丁脲
E.苯乙福明
参考答案：E
—He looked so scary that the kids were really _____.
—He often uses that _____ look to frighten them. [ ]
A. frightened; frightened
B. frightened; frightening
C. frightening; frightened
D. frightening; frightening
润滑脂的储存保管？
