A.9:10
B.10:9
C.2:5
D.5:2
答案:A
--- Who should I send this message to ?
--- The mayor is the one ____ ?
A.to send it
B.to be sent
C.for sending
D.to send it to
我国海岸纵跨()三个气候带。
A.寒带
B.温带
C.亚热带
D.热带