—Look! A car hit a bike at the street corner.
—Yes. Shall we report the to the police?
A:game
B:exhibition
C:performance
D:accident
长征二号F遥十一运载火箭在升空时发生的下列变化属于化学变化的是( )
Alice often _________ shopping with her mother at the weekend.
关于美国的叙述,正确的是( )
如图,在平行四边形ABCD中,AE⊥BC于E,AF⊥CD于F,∠EAF=45°,且AE+AF=22,则平行四边形ABCD的周长是( )