下列是一超市的四个广告牌，其中内容合法的是（）A、商品一经售出，盖不退还 B、损一赔三

— Chinese food is delicious, isn't it?

— Yes, _____ some of the cake and perhaps you'll like it.[ ]

A. trying

B. to try

C. try

D. have tried

某电梯采购合同中约定，甲方向乙方订购5部电梯，由乙直接将其中2部电梯交付给丙，但乙一直未向丙交付电梯。则该合同中应由( )承担违约责任。

A．甲向丙

B．乙向丙

C．乙向甲

D．丙向甲

My parents moved out of their old home sometime last year after they had celebrated their 50th year there.

A．anniversary

B．years old

C．age

D．wedding

买断式回购中，（）是为了减少风险而使用的质押物。

A.保证金

B.保证券

C.保证品

D.保证人

武术锻炼既要掌握动作外形“手、眼、（）、步”，又引导掌握“精、力、气、功”。

A、身法

B、动作

C、拳