Hello, I'm Anna. This is my room. It is not very big ____it's comfortable(舒适的)and it's very ____.This is my bed. My desk and my chair are next to (在 ……旁边)the bed. ____are my pens? They're in my pencil box. What's that  ____the desk? It's a model plane. My parents are Alan and Mary, and ____room is next to mine.

计算：|$\sqrt{3}$﹣2|+3tan30°+（$\frac{1}{2}$）^﹣1﹣（3﹣π）⁰﹣（$\sqrt{2}$）²．

吴凯和赵立两人是同班同学。吴凯语文学得好,赵立数学学得好,于是口头协议:相互学习,取长补短。经过一段时间后,两人的成绩都有了大幅度的提高。对此,下列认识你认为正确的是　(　　)

①只有做了我们该做的,才可能获得自己该得的

②公平的合作,必然是互惠的合作

③我们不能只享受利益而不付出,否则对其他人不公平

④他们两人不应该合作,因为他们的成绩拉不开差距了

甲、乙两只普通照明灯泡的铭牌如图所示，下列说法中正确的是（　　）