A:am not invited
B:am not being invited
C:shall not be invited
D:was not invited
吐蕃人是藏族的祖先。唐朝时为促进与吐蕃的友好关系,唐太宗把下列哪位公主嫁给了吐蕃赞普松赞干布( )
等腰梯形ABCD中,AB∥DC,AD=BC=8,AB=10,CD=6,则梯形ABCD的面积是 ( )
We should avoid mistakes.
材料在人类生产、生活中有着重要的作用.下列有关材料的说法中正确的是( )