_____ to blame him for neglect of duty? The president of the company is his uncle.

A．What good it is

B．How good it is

C．What good is it

D．How good is it

将装有晒干的小麦种子的试管放在火上烘烤，试管内壁上会出现_______，这说明种子里有_______。将芝麻或者花生种子放在白纸上挤压，纸上会出现_______，这说明种子里有______。