插制干花插花作品时,可以使用()固定花材。
A.干花泥
B.浸水的鲜花花泥
C.塑料泡沫
D.泥土
E.塑纸
F.剑山
参考答案:A, C, D
___his classmates___his Maths teacher has gone hiking. You can’t find them at school.
A.Both, and
B.Neither, nor
C.either, or
D.Not only, but also
螺杆式注射成型机使进入料筒内的塑料颗粒有一个()的过程。