下面不属于早期胚胎形成要经历的阶段是()
A、有丝分裂
B、卵裂
C、迁移
D、附植阶段
参考答案:A
Which of the following “ed” has a different pronunciation from the other three?
A.watched
B.washed
C.shopped
D.raised
下列哪个不是羊毛的物理性质?()
A、细度
B、长度
C、强度
D、重量