正方形每边长____,一周长____.
六边形每边长____,一周长____
维新变法期间,梁启超不仅创立了《时务报》,而且创新了报刊文体,力求文字通俗易懂。这反映了维新派( )
如图,矩形ABCD对角线相交于点O,∠AOB=60°,AB=4,则AC的为 ( )
流行语反映着时代的思潮和特点。如果置身于 1917 年底的俄国,你将感受到的流行语是( )
Jim records his physical training every time so that he can it and think about how he should improve it the next day.