胡杨生长在中国西北浩瀚的沙漠中，它扎根深，抗干旱，迎风沙，耐盐碱，生命力极强。人们赞美它“生而千年不死，死而千年不倒，倒而千年不朽，称其为英雄树”，誉之为中华民族坚韧不拔的精神象征。弘扬中华民族精神
①可以激发人们昂扬的精神状态，体现了意识对物质的积极的反作用
②可以为现代化建设提供精神动力，体现了意识对物质的相对独立性
③可以调动人的精神能量，体现了意识对物质的特殊决定作用
④可以促进人的全面发展，体现了意识对物质的依赖关系

已知 $m$ ， $n$ 表示两条不同的直线， $\alpha$ 表示一个平面，给出下列四个命题：

① $\text{{}\begin{array}{c}m\perp \alpha \\ n\perp \alpha \end{array}\Rightarrow m//n$ ；② $\text{{}\begin{array}{c}m\perp \alpha \\ m\perp n\end{array}\Rightarrow n//\alpha$ ；③ $\text{{}\begin{array}{c}m//\alpha \\ n//\alpha \end{array}\Rightarrow m//n$ ；④ $\text{{}\begin{array}{c}m\perp \alpha \\ n//\alpha \end{array}\Rightarrow m\perp n$ ．

其中正确命题的序号是（   ）

    When it was getting dark, a wolf was walking along the road. Then he was surprised to see his huge shadow(影子) under his feet.
 “Wow, I didn't know I was so big!” The wolf was happy to know it.
    As time went by, the sun was going down and his shadow grew bigger and bigger, so it looked like a giant.
 “Oh, look at my shadow. I'm so big!” The wolf thought that he was as big as his shadow. “I'm huge and excellent. I don't need to be afraid of the lion.”
    From then the wolf walked with his shoulders open. He thought of himself as the king of the forest.
 “Why should I fear the lion? Lion! Come out! Here is your match（对手）.”It made the lion very angry, so he went to see the wolf.
 “Here I am. I heard you said you could beat me. Now I'm here. Why don't you prove it?”
    The lion's sharp claw(爪子) hit the wolf's head hard. The wolf was knocked out. “Ah, help me!”
    But it was too late when the wolf got to know that he wasn't as big or strong as his shadow. Unluckily, he became the lion’s delicious supper.

物理学中，用磁感应强度（用字母B表示）来描述磁场的强弱，国际单位是特斯拉（用字母T表示），磁感应强度B越大表示磁场越强；B=0表明没有磁场．有一种电阻，其阻值大小随周围磁感应强度的变化而变化，这种电阻叫磁敏电阻，为了探究电磁铁磁感应强度的大小与哪些因素有关，小超设计了如甲、乙两图所示的电路，图甲中电源电压恒为6V，R为磁敏电阻，图乙中的电磁铁左端靠近且正对图甲中的磁敏电阻R₁磁敏电阻R的阻值随周围磁感应强度变化的关系图象如图丙所示．

My birthday is on the second of April.(对划线部分提问)

____ is ____ birthday?