问题
单项选择题
After you have reached the deepest sleep, ______.
A．you will stay at the fourth stage the rest of the night
B．you will lose your consciousness for 40-60 minutes
C．your brain waves will show the delta rhythm
D．your brain waves will show the alpha rhythm
答案
参考答案：C
解析：[分析] 细节题型。 答案出自第一段的Your brain waves will show the delta rhythm. You may think that you stay at this deep stage...