A:美观
B:满足不同人群的需要
C:提高强度
D:节省建筑材料
填空
①That is not____kite.(I)
②The dress is____. Give(给) it to ____.(she)
③Is this____watch?(you) No,it's not____.(I)
④____is my brother.____name is Jack.(he)
⑤Here are many dolls,which one is ____(she).
She ____ (have)a new bike.