凉闸站
参考答案：
在长大下坡地段，为使制动后过热的闸瓦降温，列车需短暂停留，进行凉闸的车站。
How I wish I _________ him the secret! I regret having done that now.
A．hadn’t told
B．had told
C．would tell
D．didn’t tell
简述品牌联想的层级。
