单项选择题
A. low-lying urban areas B. all coastal cities C. people who live on the beach D. Shanghai
A.chief B.niece C.field D.friend
A．how long do you think that B．international communications C．I cannot see you frequently D．after you finish your degree E．how often do you see me F．I have not seen you in a while G．Learn something important H．So where have you been