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菱形纸片ABCD的一内角和为60度,边长为2,将它绕对角线的交点O顺时针旋转90度后到四边形A'B'C'D'的位置则旋转前后两菱形重叠部分的多边形的周长为多少答案可带根号, 已知菱形AEFB是有菱形ABCD绕点A顺时针旋转的到的,这两个菱形的边长都是a（1）如图,连接BD,BE,BD=AD=a,M,N分别是BD,BE上的两个动点,且满足DM+NE=a,判断△AMN的形状,并说明理由.（是等边三角形）（2 菱形abcd边长为1,∠b等于60°,沿对角线ac剪下一个△a‘cd,将△a’cd绕顶点c顺时针旋转,旋转角为β,设a’d的中点为e,连接be.当β等于＿＿°时,be的长度最大,最大值为＿＿ --Can you s__ me your famliy photos?--here you are -can i take a ___(look) at your photos? -here you are. Here _____three photos of your family.（填写be动词） Tom got first place,and this made his parents happy.为什么不用that 而用this 求英语学霸讲解错题, It 's too short for "it is"是什么意思short for“it is”是什么意思 遂大通六经之旨,慨然有志于天下 的翻译是翻译,看清楚了! 遂大通“六经”之旨,慨然有志于天下 的 遂大通六经之旨,慨然有志于天下的翻译 解释:遂大通六经之旨,概然有志于天下 “遂大通六经之旨,慨然有志于天下”是什么意思 几道英语单词辨音题, 三道英语辨音题,求原因, 几道英语辨音题, What's "PS" short for?I usually read "PS" on internet,I know "PS" almost short for "Photoshop" but sometime somewhere it seem to have other mean,but I don't know what."PS" short for "part some/say" or "pass some/say"?such as"我那天去面试.PS:那 what's "Fav." short for favourite what's HQ short for?ICRC HQ He's thin and short.用what提问 填空 At nine o'clock tonight I ______ (do)my homeworkDon't call me before seven .I _______（get dressed)They ________（not work）next Thursday.It's a public holidayIn the year 3000 a lot of people _______(live）on space stations ————you 我的世界精准采集的英文是什么,急 单选：I have watched the TV play before.I will watch it _ second time.A this B a C another D doesI have watched the TV play before.I will watch it _ second time.A this B a C another D doesPS:原因 印度如何解决食物短缺 用英文写搞辩论啊 要求用这个作为主题 what is soap operas?请用简短的几句话回答（初二水平） Are you a silly man? the time will come when you'll thank me for thiswhen you'll thank me for this应是定语从句,修饰the time,是不是定语从句可以放在句子后面 Your English teacher Miss Sun used to be easygoing.(改为反意疑问句）Your English teacher Miss Sun used to be easygoing,____ ______? He used to__in the sun,but now he is used to__at night A.read,read B.reading,read C.read,reading D.reading,reading 正确答案是： In the end my father_______a teacher.A.was used to be B.used to be C.was used to being.Dused to being我觉得是C对吗?快有奖，不回答拉倒