Ф3.5³11m水泥磨的有效长度是11m，有效直径为3.5m。（）
参考答案：错
The little boy can wrote many poems (诗歌). That's really ______.[ ]
A. unusual
B. usual
C. creative
D. talented
先兆子宫破裂的主要表现为病理性收缩环
