用（）结合剂制成的砂轮应用范围最广。
参考答案：陶瓷
Your hair is too long. You’d better have it ______.
A．cut
B．to cut
C．cutting
D．Cutted
栓剂基质
A．硬脂酸镁B．邻苯二甲酸醋酸纤维素C．干燥淀粉D．尼泊金乙酯E．可可豆脂
