从下面方框中选择正确的单词并用其适当形式填空，使短文意思完整、通顺。

Dear Jenny,

    My name is Alan. I'm a 12-year- old girl. I'm the only ____ in my family. My birthday is on ____ 1st. It's the ____ day of the sixth month. It's also the Children's Day(儿童节). My parents ____ a party for me on that day. My friends ____ to the party. They bring(带来) me many birthday presents(礼物), and they sing Happy Birthday to me. ____ eat some strawberries, oranges and ____. We eat chicken and cakes ____ dinner. We also play games. We have a ____ time! How old are you? ____ is your birthday? Can you tell me?

                                                                                                                                                                                      Alan

由于城市人口集中，工业发达，释放出大量废气和废热，导致城市气温高于郊区，从而引起城市和郊区之间的小型热力环流，称之为城市风．读城市风示意图，回答下题．

植物的主要类群由高等到底等的顺序排列起来应是（  ）

①蕨类植物 ②裸子植物 ③被子植物 ④藻类植物 ⑤苔藓植物．

25℃、101kPa下：

①2Na（s）+ $\frac{1}{2}$ O₂（g）═Na₂O（s）△H₁=﹣414kJ/mol；

②2Na（s）+O₂（g）═Na₂O₂（s）△H₂=﹣511kJ/mol．

下列说法正确的是（   ）