（）妇女以健康丰满为美，盛行高髻而且样式众多。
A.北朝
B.唐朝
C.宋朝
D.清朝
参考答案：B
It is generally believed that teaching is ___________it is a science.
A．an art much as
B．much an art as
C．as an art much as
D．as much an art as
“安全”一词具备社会属性及自然属性，在安防产品的设计考虑时，以下说法哪个是自然属性。（）
A.造成环境污染
B.产品经济耐用
C.不容易丢失
D.携带方便
