某批环形零件在铣床上采用调整法铣削一缺口，其尺寸见下面零件图，要求保证尺寸430-0

--- The two old friends were ______ busy _____with each other ______ the time.

--- Yes. They haven’t met for long.

A．too, to talk, to forget

B．too, talking; to forget

C．so, to talk, that they forgot

D．so, talking, that they forgot

气微芳香，味微苦，嚼之粘牙，唾液呈乳白色，并微有香辣感。此药材是（）

A.苏合香

B.乳香

C.没药

D.血竭

E.冰片

我国各类地形类型中，所占比例最大的是[ ]

A．平原

B．盆地

C．高原

D．山地

-- - Alison, I’m sorry. I can’t come to the wedding with you tomorrow morning. 

   -- ________? 

   -- My grandma was severely ill, so I have to stay in the hospital to look after her. 

A．How is it

B．How come

C．So what

D．What’s the problem

县级以上地方人民政府有关部门、预备役人员所在乡（镇）人民政府、街道办事处或者企业事业单位，应当协助兵役机关做好预备役人员储备的有关工作。