问题补充：
It’s good manners .
A. for Chinese people to open the present as soon as he/she receives it.
B. for both Chinese and British people to open the presents the moment they receive them.
C. for both American and British people to open the presents when they get back home.
D. for both American and British people to open the presents immediately they receive them.
答案：
A. for Chinese people to open the present as soon as he/she receives it.
B. for both Chinese and British people to open the presents the moment they receive them.
C. for both American and British people to open the presents when they get back home.
(答案→)D. for both American and British people to open the presents immediately they receive them.
解析：根据常识可知，英美国家的人收到礼物通常当场打开，而中国人并不是，故本题选D。
