If he did not know them，he would greet them with a few words about weather，but if he did，he would ask about their families or make jokes，always cutting his cloth ______his customers.

A．according to

B．due to

C．instead of

D．up to

动态联编中直到 ______ 时才能确定调用哪个函数；而静态联编则是在 ______ 时进行的。