颧弓骨折造成张口受限的原因是因为压迫了()
A.髁突
B.颞肌
C.喙突
D.咬肌
E.颞肌和喙突
参考答案:C
筛管运输物质和方向是[ ]
A.有机物,向上
B.无机盐和水,向上
C.有机物,向下
D.无机盐和水,向下
Pip agreed to give some piano lessons to the girl_______ for a generous gift from her mother.
A.in nature
B.in return
C.in turn
D.in time