I enjoy _____the western food and I often make some for my parents.

A．cook

B．cooking

C．cooks

D．to cook

下列情况属于正常使用极限验算的是（）

A.受弯构件的弯曲强度验算

B.受压构件的稳定计算

C.螺栓连接的强度验算

D.梁的挠度验算