如图,▱ABCD的对角线AC、BD相交于点O,点E、F、G、H分别是线段OA、OB、OC、OD的中点,那么▱ABCD与四边形EFGH是否是位似图形?为什么?
一场大雨过后,蚯蚓会爬到地面,请你帮助分析其中原因( )
“身体体表有坚韧的外骨骼,足和附肢都分节”是下列哪种动物的特征( )
用所给词的适当形式填空
(1)Autumn is a____(wonder)season.
(2)We all hope____(have)a long holiday.
(3)I____(buy)a new car the day before yesterday.
(4)I like doing some____(shop)with my parents.
(5)He did some____(read)last night.