grass      

生活离不开化学，用所学化学知识回答下列问题：

水是生命的源泉，为了人类社会的可持续发展，我们应该了解水的有关知识．

根据短文内容判断下列句子正误。
    My name is Amy. Tomorrow is Saturday. My parents aren't going to work, but we are going to be very busy tomorrow. My mother is going to buy something. I'm going to the bookstore in the morning. Then I'm going to buy a dictionary.
    Tomorrow evening we are going to visit my grandparents and have a big dinner. After that we are going to the cinema. I think we are going to have a nice weekend.

过抛物线y²=8x的焦点作直线交抛物线于A（x₁，x₂）、B（x₂，y₂）两点，若|AB|=16，则x₁+x₂=____