潮差是（）
A.相邻高、低潮高之差
B.主、附港潮高之差
C.大潮与小潮之差
D.回归潮与分点潮之差
参考答案：A
—What is the matter with Mary?
—______.
[ ]
A. She is a student.
B. She is reading.
C. She has a bad cold.
个险渠道销售的产品不能在财富渠道进行销售。（）
