用“bead”造句大全，bead造句
Hewentoutthroughthebeadcurtain.Sheaccidentallyswallowedaglassbead.Apaperclip(orlargeplasticbead).Thetoywouldonlytakethebeadpairhorizontally,butdespitethis,thechildrenheldthebeadpairverticallytotesteac...
用“jade bead”造句大全，jade bead造句
Juehangadornjadebeadcentralgap.Thecrispcrashofraindropssplashed,andthenthesoundofjadebeadsshattered.Thetotalpopulationisjust330,000andthespectacularappearancefromabovehasbeenlikenedtoanecklaceofspeckl...
已知：如圖，△BCE、△ACD分別是以BE、AD爲斜邊的直角三角形，且BE=AD，△CDE是等邊三角形．求*：...
問題詳情：已知：如圖，△BCE、△ACD分別是以BE、AD爲斜邊的直角三角形，且BE=AD，△CDE是等邊三角形．求*：△ABC是等邊三角形．【回答】詳解：∵△CDE是等邊三角形，∴EC=CD，∠1=60°．∵BE、AD都是斜邊，∴∠BCE=∠ACD=90°在Rt△BCE和Rt△A...