如图所示,一张矩形纸片沿BC折叠,顶点A落在点A′处,再过点A′折叠使折痕DE∥BC,若AB=4,AC=3,则△ADE的面积是 ★ .
仔细观察分析下边漫画,运用文化生活知识回答下列问题:
ATP与ADP相互转化式子正确的是 A.ADP+Pi ATP B.ATP+PiADPC.ADP+Pi+能量 ATP
-There is going to be a new movie on tonight.Will you be free then? -________.Let's go together. A.That's right B.It's very kind of y
右图为进行性肌营养不良遗传病的系谱图,该病为隐性伴性遗传病.7号的致病基因是由 ( ) A.1号传下来的
已知:如图,∠ADE=∠ACD=∠ABC,图中相似三角形共有( ) A.1对 B.2对 C.3对 D.4对
人体内组织细胞与外界环境进行物质和能量的交换的桥梁是( ) A.体液B.细胞内液 C.组织液 D.细胞外液
Her mother doesn’t ______ of her going to stay in the United States alone. A. admit B. agree C. approve D. prove