—Excuse me, is this _______ bicycle?
—No, it isn’t. _______ is over there under the tree.
A:your; Mine
B:my; Your
C:her; Her
D:mine; Yours
等腰梯形ABCD,上底边CD=1,腰AD=CB=2,下底AB=3,按平行于上、下底边取x轴,则直观图A′B′C′D′的面积为____
小莹到清源山游玩,在树林里发现香樟、油杉等名贵树木,有些树下长着蘑菇,蝴蝶在花丛中飞舞,还看到小鸟在树上觅食虫子.请分析回答: