—Please sit down and have a break. You have been working on this machine nonstop for two hours.

—No, thanks.              .

A．I’m not in the least tired

B．I’m too tired to move

C．I’m not a little tired

D．I’m a bit tired

经济全球化的主要传播途径，除金融渠道外，还有贸易途径，而后者主要表现在（）的行为上。