我国著名的“四大家鱼”是（　　）

家人的生日表

    I am making a birthday chart for my family. There are eight people in my family. My birthday is on June 9th. My mother's birthday is on June l4th. My father's birthday is on June 23rd. My grandfather's birthday is on April 12th. My grandmother's birthday is on May 12th. My uncle Bill's and aunt Mary's birthdays are on the same day—October 1st. My cousin's birthday is on November 11th. My grandparents live with my uncle and aunt in America, So I usually send e—cards to them for their birthdays. I love my family.

在风速大致相同，而气温垂直分布不同的A、B、C、D四种情况下，最有利于某工厂68米高烟囱灰尘扩散的是(    )