《对外贸易法》适用于对外贸易以及与对外贸易有关的知识产权保护。（）
参考答案：对
He appears ______ a long time. He is impatient for my arrival.
A．to wait
B．to be waiting
C．to have waited
D．to have been waiting
人是单眼皮还是双眼皮是受基因控制的．______．
