—Good morning. Can I help you? 

—I'd like to have this package__________, madam. [ ]

A. be weighed

B. to be weighed

C. to weigh

D. weighed

弯曲时，材料在不发生破坏的情况下，所能弯曲的最小半径，称为（）弯曲半径。

A、最小

B、最大

C、一般