激磁（励磁）

写出成语“螳螂捕蝉，黄雀在后”中隐含的食物链：____________________________。

Are you good _____ teaching kids? We need a weekend teacher. [ ]

A. with

B.  at 

C. for

D. in

       all of us enjoy playing computer games,         we can’t spend too much time on them.

A．Although, but

B．But, /

C．Although, /

D．But, although

某开体泥驳“华泰99”轮泥舱底部的开启装置采用正常的重力排泥装置。验船师在核定作业吃水状况时了解到该轮在10分钟内可以使船舶从最大作业吃水降低到热带载重水线，遂提出整改。该验船师的要求有何依据？