北半球有一自西向东流动的河流，一般会出现 [ ]

A、南岸侵蚀大于北岸

B、北岸侵蚀大于南岸

C、南岸堆积快于北岸

D、南岸侵蚀、堆积都快于北岸

—Fangfang failed in the singing competition. She must be very sad.
—Let's go and（）

A. wake her up

B. cheer her up

C. pick her up

D. take her up