卷帘门的特点有那些？
参考答案：
造型美观、结构紧凑先进、操作简便、坚固耐用、钢性强、密封性好、不占地面面积、启闭灵活方便和防风、防尘、放火、防盗等特点。
The reason ________ she gave for not being present was ________ the heavy snow prevented her
coming.[ ]
A．why; because
B．why; whether
C．that; that
D．how; that
脑组织活检见Pick细胞（）。
A.FAD
B.VD
C.DLB
D.CAJ
E.Pick病
