— Would you like to go out for a walk with us?
— ___________.
A：You may ask your sister to do, too.
B：Yes, but I can't afford the time.
C：No, I'd like to.
D：No, I don't feel in the mood for it now
我国有“黄金水道”之称的河流是（ ）
划分发达国家与发展中国家的依据是（ ）
1217÷334 =____
随机变量ξ服从二项分布ξ～B16,p，且Dξ=3则Eξ=等于（ ）
