速殖子、包囊、裂殖体、配子体和卵囊属于()的5个形态阶段。
A.蛔虫
B.肝吸虫
C.弓形虫
D.旋毛虫
参考答案:C
He was a good student and scored ________ average in most subjects.[ ]
A. below
B. of
C. on
D. above
元杂剧中表示动作、表情及舞台效果的术语是()
A、旦
B、科
C、煞
D、净