3.收敛的平面图形、除三角形外
semicircle 半圆 concentric circles 同心圆 quadrilateral 四边形pentagon 五边形hexagon 六边形 heptagon 七边形 octagon 八边形nonagon 九边形 decagon 十边形 polygon 多边形 parallelogram 平行四边形 equilateral 等边形 plane 平面 square 正方形,平方 rectangle长方形 regular polygon 正多边形 rhombus 菱形 trapezoid 梯形
国内英语资讯:China expects further development of China-EU ties under new EU leadership: FM
体坛英语资讯:Venezuelas Figuera to miss rest of Copa America
体坛英语资讯:U.S. reach World Cup last 16 on record-breaking goals, China to face Italy
体坛英语资讯:Pedro Delgado gains Chinese citizenship to play for Shandong Luneng
国内英语资讯:Interview: President Xis letter inspires more contributions to Japan-China friendship -- J
体坛英语资讯:Brazil, Peru to meet in September friendly
国内英语资讯:Chinas high-speed rail offers model for other countries: World Bank
体坛英语资讯:Japan coach rues missed chances against England in Womens World Cup
二十年后,他还记得我
国际英语资讯:Jordan, Palestine say no economic offer can replace two-state solution
国内英语资讯:Ministry dispatches work teams to assist with local flood control
国际英语资讯:Gas explosion kill 3 people in Poland
国内英语资讯:Floods threaten middle and lower reaches of Yangtze River
没工作不读书,这些名人在间隔年都去干嘛了?
国际英语资讯:Yemeni Houthi rebels claim new drone attacks on Saudi airports
体坛英语资讯:Serbia, Spain in lead after water polo super finals group stage
国际英语资讯:Libyan army says repels govt forces attack in southern Tripoli
国内英语资讯:China urges U.S. to stop wrong practices of curbing people-to-people exchanges
国内英语资讯:China issues new guideline to improve compulsory education
国际英语资讯:Turkey continues to support peace, stability in BiH: Erdogan
国际英语资讯:Indias Jaipur named as World Heritage Site by UNESCO
体坛英语资讯:Cameroon finalize 23-man squad for 2019 AFCON
体坛英语资讯:Four teams stay in race for Water Polo Super Finals trophy
体坛英语资讯:China need to overcome pressure to progress in Womens World Cup, says coach
国内英语资讯:China Focus: Party and state institution reform helps China modernize governance
国际英语资讯:Conservative leader Kyriakos Mitsotakis sworn in as Greeces new PM
体坛英语资讯:Kenya to widen medal scope ahead of Tokyo Olympic Games
体坛英语资讯:China beat Australias NBL United 101-98 in International Basketball Challenge
国际英语资讯:Venezuela urges UN to intervene against U.S. sanctions
迪士尼真人版《花木兰》预告片发布!对演员造型你还满意吗?
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |