在环境问题上，我们所面临的困境不是由于我们_____，而是我们尽力了，但却无法遏制环境恶化的势头，这是一个信号：把魔鬼从瓶子里放出的人类，已经失去把魔鬼再装回去的能力。 填入划横线部分最恰当的一项是：

A.无所顾忌 

B.无所不为 

C.无所事事 

D.无所作为

To encourage adequate nutritional intake for a client with Alzheimer's disease, what should the nurse do

A．Stay with the client and encourage him to eat.

B．Help the client fill out his menu.

C．Give the client privacy during meals.

D．Fill out the menu for the client.