The little boy, ________two attempts to climb over the fence of the garden, decided to have another try.[ ]

A. having made  

B. making

C. made  

D. has made

有关麻醉状态下意识的变化，正确的是（）

A.永久性、不可逆丧失

B.可逆的丧失

C.苏醒后意识仍然丧失

D.意识丧失作用于大脑皮层

E.以上均不是