完形填空。
    Hello. I'm Jenny. I have a best friend.   1 name is Amy. We are in the same school. We both can sing and dance well. She is as  2 as me.
    At school, my teachers all can make 3   happy. But we must4  white blouse with the long sleeves. I am good 5   maths and English. She 6  English. She thinks it's difficult. Yesterday we7   a party at school. We enjoyed ourselves.
    At spare time, my favourite8   is winter. I like 9  snowmen in winter. But she likes eating ice creams in summer. What a pity!
    In two months' time, we are going to go to middle school. We are very busy every day. We  10   harder than now.

用手拍桌子，手和桌子之间发生了相互作用，若以手为研究对象，施力物体是（   ）

如图为叶芽结构示意图，其中能发育为茎的结构是（    ）

下列反应中属于分解反应的是（　　）

公园里绿树成荫，被人们称为天然的“氧吧”，你认为在公园“吸氧”的最佳时间是（  ）