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我们容易发现：反比例函数的图象是一个中心对称图形，你可以利用这一结论解决问题。 如图，在同一直角坐标系中，正比例函数的图象可以看作是：将x轴所在的直线绕着原点O逆时针旋转α度角后的图形，若它与反比例函数 的图象分别交于第一、三象限的点B，D，已知点A（-m，0）、C（m，0）。 （1）直接判断并填写：不论α取，四边形ABCD的形状一定是_______； （2）①当点B为（p，1）时，四边形ABCD是矩形，试求p，α，和m的值； ②观察猜想：对①中的m值，能使四边形ABCD为矩形的点B共有几个？（不必说理） （3）试探究：四边形ABCD能不能是菱形？若能，直接写出B点的坐标，若不能，说明理由。
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【简答题】Who is the author of Alice’s Adventures in Wonderland?
【简答题】Alice's Adventures in Wonderland is one of the most loved children's books of all time, and many s enjoy it as well. It tells the story of a young girl named Alice, who follows a rabbit entering ...
【简答题】Alice’s Adventures in Wonderland is one of the most loved children’s books of all time, and many s enjoys it as well. It tells the story of a young girl named Alice, who follows a rabbit entering...
【简答题】Alice's Adventures in Wonderland is written in ?
【判断题】Alice’s Adventures in Wonderland was given to the real Alice as an Easter gift.
A.
正确
B.
错误
【单选题】在①0＜cosα＜1（0°≤α≤90°），②sin78°＞cos78°，③sin0°＞tan45°，④sin25°=cos65°这四个式子中，正确的是（ ）
A.
①、③
B.
②、④
C.
①、④
D.
③、④
【简答题】阅读理解。 Alice's Adventures in Wondertand is one of the most loved children's books of all time, and many s enjoy it as well. It tells the story of a young girl named Alice, who follows a rabbit ent...
【简答题】Alice’s Adventures in Wonderland is one of the most loved children’s books of all time, and many s enjoy it as well. It tells the story of a young girl named Alice, who follows a rabbit entering ...
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