铲除小麦秆锈病的转主寄主对防治该病有重要作用。
参考答案：对
企业交纳的城市维护建设税和教育费附加都应该计入营业税金及附加。（）
_________ the progress of science and technology, the discomfort of old age will no doubt always be with us.
A．As for
B．In addition to
C．Except for
D．In spite of
