试述腰上三角的位置、境界、内容及临床意义。

— John had nothing to do ______ the matter, ______? 

— Yes, he did. [ ]

A. with; did he

B. with; didn't he

C. from; had he

D. from; hadn't he

— Whose are the green clothes on the table? 

— They are _____. [ ]

A. my

B. mine

C. me

D. myself

高热惊厥单纯型发作形式为___________________，持续时间___________________，好发年龄___________________。

套期图利又称差价交易，套利交易，它可分为（）。

A.跨月套期图利

B.跨商品套期图利

C.跨公司套期图利

D.跨市场套期图利

材料在磨损和外力作用下，抵抗（）的能力称为硬度。