单项选择题
A．Students who work in the café earn a lot of money． B．At the same time they learn how to run business． C．They also get school credit． D．They give the money they earned to their school too．
A. simple information is used B. children should know their names C. it helps children act automatically D. difficult information is only partly learned
A. enjoyed being with other sea animals B. killed other sea animals that have come into his pen C. had limited contact with other sea animals D. is ready to go to the open sea