To my surprise, my grandma suddenly asked me ________ get the "Red Packets" on QQ.
A:that she could
B:how she could
C:what could she
D:whether could she
番茄果实的表皮属于____组织,果肉属于____组织.由不同的组织按照一定的次序联合起来,形成具有一定功能的结构,就叫____,植物有六大器官,其中____、____、____属于生殖器官;____、____、____属于营养器官.
如图,将透明三角形纸片PAB的直角顶点P落在第四象限,顶点A、B分别落在反比例函数y= kx 图象的两支上,且PB⊥x于点C,PA⊥y于点D,AB分别与x轴,y轴相交于点E、F.已知B(1,3).