To test eggs, _____ them in a bowl of water: if they float they’re bad, if they sink they’re good.

A．put

B．Putting

C．to put

D．to be putting

皮下注射胰岛素部位的选择，哪项是错误的()

A．三角肌下缘

B．腹部

C．大腿外侧

D．大腿前侧

E．前臂掌侧下段