外热式电烙铁头应全部插进烙铁心子里边，不要留有（）
参考答案：空隙
印花轮廓最清晰的是（）
A、直接印花
B、拔染印花
C、防染印花
—_____?
—It's very popular in China.[ ]
A. What do you like football
B. How do you think of football
C. How do you play football
D. What do you think of football
