根据句意及汉语提示填空。

1.I was ___________ (想知道) whether you'd like to come to a party.

2.A car suddenly ___________ (出现)over the hill.

3.Our teeth have a hard ___________ (表面), so we can eat hard food.

4.Many old buildings ___________ (保留) in Beijing now.

5.We take care of animals and plants. In fact we ___________ (保护) ourselves.

《关于进一步规范药品名称管理规定》中要求，允许使用商品名的药品不包括

A．新注册药品
B．新活性成分的药品
C．新的化学结构药品
D．改变剂型和规格的药品
E．持有化合物专利的药品