— Excuse me, sir. Is the swimming pool open all day as it used to be? 

— _____. only from 6:00p.m to 10:00p.m.[ ]

A．That's right

B．Yes, of course

C．Sorry, I'm not sure

D．Sorry, I'm afraid not

甘草质地坚实，断面略呈纤维性，黄白色，（）。

A.粉性

B.角质状

C.油性

D.柔润性