下面句子中加点的成语运用正确的一项是 ( )(2分 )A.桂林的山水黄山的松,真是巧夺天工。B.同学们经常向老师请教,这种不耻下问的精
当太阳直射点位于南回归线上时,北回归线的正午太阳高度是( ) A.23°26′ B.43°08′
做机械运动的物体是:A、铁锅生锈 ; B、田里玉米长高;C、水蒸发; D、地球绕太阳公转.
Rt△ABC斜边BC平面α,顶点Aα,则△ABC的两条直角边在平面α内的射影与斜边所成的图形只能是( )A.一条线段或一个直角三角形 B.一条线段或一
材料一:南海海域及周边国家示意图。 材料二:2012年7月24日,海南省三沙市成立,下辖西沙、中沙和南沙群岛的岛礁及其海域。永兴岛是西沙群岛,
如图:AC=DF,AD=BE,BC=EF。求证:∠C=∠F。
. When I did well in the exams, my father usually looked at me and reminded me to keep modest. A. happy B. happily C . more happy D. happiness
New York Times-The already crazed competition for admission to the nation’s most famous universities and colleges became even more intense (激烈的) this year, with many recording the lowest a