油烟机油垢较厚，可使用（）先行剥离，再使用清洁剂清洗。
参考答案：塑料铲刀
炮眼直径和深度分别小于70mm和5m的爆破方法是（）。
A.药壶炮
B.钢钎炮
C.猫洞炮
D.洞室炮
—What does your father look like?
—He ____.[ ]
A. likes history
B. is tall and thin
C. likes eating meat
D. is 40 years old
