草绳卷干时，尤其要保证每一轮草绳间要紧密，不留缝，不歪斜，不松散。( )
参考答案：对
________ the programme, they have to stay there for another two weeks.
A Not completing B Not completed
C Not having completed D Having not completed
恶性多形性腺瘤（）
A.星网状层结构
B.肉瘤成分
C.玫瑰花样结构
D.淀粉样物质
E.双层导管结构
