The tall building here for 100 years.
A:is
B:was
C:has been
D:is been
如图,在△ABC中,∠C=90°.若BD∥AE,∠DBC=20°,则∠CAE的度数是( )
This is old computer. I want a new one.
一位母亲生了一儿一女双胞胎,这两个小孩最有可能来自于( )