The manager ____ ____ ____ a new type of computer.
—Do you advocate ________ trucks from the city centre?
—I can't agree more. After all,people's health is the most important thing of all. ( )
下图表示蛙的发育过程,正确的发育顺序是
如图,△AED∽△ABC,相似比为1:2.若BC=6,则DE的长是多少?