A:be, should be sent
B:was, be sent
C:be, was sent
D:was, was sent
A. This is a big ship. B. It's a book about London.
C. London is a big city. D. It's Buckingham Palace.
E. My house is very small, but it's beautiful.
已知ΔABC中,∠A∶∠B∶∠C=3∶7∶8,则ΔABC的形状是( )
组 别
A型
B型
AB型
O型
频 率
x
0.4
0.15
0.1