幼儿神经活动的基本特点是()
A．兴奋过程占优势
B．抑制过程占优势
C．兴奋过程不占优势
D．两者相平衡
E．以上都不是
参考答案：A
A: You look very nice in your new dress today.
B: Oh, really? I it when it was on sale.
A．buy
B．bought
C．have bought
D．will buy
硝酸甘油适用于（）
A.稳定型心绞痛
B.不稳定型心绞痛
C.变异型心绞痛
D.各型心绞痛
E.劳累型心绞痛
