大脑额叶约占整个大脑皮质的（）
A．1/2
B．1/3
C．3/4
D．2/5
E．2/3
参考答案：B
I saw there was a wallet on the ground. I picked . [ ]
A. lay, it up
B. lying, it up
C. lain, up it
D. lying, up it
《本草纲目》载药量是（）
A.365种
B.1672种
C.1892种
D.1844种
E.1562种
