进境种苗带有栽培介质的，货主或代理人必须到林业部门申请办理栽培介质的检疫审批。（）
参考答案：错
When you study the local map, you'll find this town is _____.[ ]
A. twice as a large town as that
B. twice the size of that one
C. twice as larger as that one
D. twice as larger a town as that
甚高频的频率范围是（）。
A.300kHz-3MHz
B.3MHz-30MHz
C.30MHz-300MHz
D.300MHz-3GHz
