看              是认识学校最好的方法。 （   ）

泌尿系统的主要器官是（　　）

five pandas

— Hello! Kangkang! ____.

— Hi, Xiao Lei! I’m going to the post office.

— ____.

— I’m going to send some clothes and books to the students in Wenchuan.

— You’re really warm-hearted. ____.

— No, they can’t. Their school buildings fell down and the government (政府is rebuilding schools for them.

— It’s good news. I hope they can go to school early.

— ____. Oh, what about you? What will you do for the students there to show your love?

— ____.

— Money? That’s good. Shall we go to the post office together?

— Good idea. Let’s go!

①可为屠宰场提供优质肉牛　②有利于生产大量的胚胎和胚胎工程所需要的原材料

③不够卫生，不能合建      ④从屠宰场废弃的卵巢中可直接获取卵母细胞