某种动物繁殖量y（只）与时间x（年）的关系为y=alog₃（x+1），设这种动物第2年有100只，到第8年它们将发展到（　　）

阅读理解,选择正确选项。

     I'm Amy. My birthday is July 20th. I usually get up early on my birthday. I don't go to school on my birthday, because I am on summer vocation. Usually I have a birthday party. We have a big dinner and eat a birthday cake and ice-cream. We sing, dance, watch TV and play computer games at the party. In the evening, I go to the beach with my family because it's usually very hot.  I am so happy on my birthday!

下列各句中，没有语病的一句是（       ）

2010年冬奥会，中国的滑冰项目共获得5块金牌，其中金牌得主申雪、赵宏博、王蒙、孙琳琳、张会均为黑龙江人。黑龙江省冬季严寒，这说明（   ）