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