9.4÷11的商是（ ）小数，写作（ ），循环节是（ ），结果保留三位小数约是（ ）。
循环，，54，.855
下列不属于肛裂并发症的是（）
A.肛窦炎
B.单口内瘘
C.哨兵痔
D.肛 * * 肥大
E.血栓痔
30. It was once called the Sea of Bamboo, but now only one fifth of the area ______ covered with bamboo, and sixty percent of other plants ______ taken the place of the bamboo.
A．are; have
B．is; has
C．is; have
D．are; has
，54，.855
，54，.855