【简答题】如图为叶片的横切面结构示意图,请据图回答: (1)叶片的基本结构包括1和5______、2______、4______. (2)图中的6是______,它是由两个______围成的.它是植物体______的门户,也是植物与外界进行______交换的窗口,它主要分布在叶片的______. (3)2与4相比,2具有______和______的特点,所以,叶片的______表面看起来颜色要深一些,并且在...
【判断题】Gerhard Lenski used the concept “sociocultural evolution” to refer to how technological innovation changes the shape of societies.
【简答题】9米3毫米9米3分米9千米3米9米3厘米 ______>______>______>______.
【判断题】The season of spring always goes hand in hand with the season of autumn to refer to the concept of time.
【简答题】A.速尿 B.白蛋白 C.青霉素 D.肾上腺皮质激素 E.细胞毒药物 治疗原发性肾病综合征首选药物是( )
【简答题】3×(-9)+7×(-9)=______.
【简答题】写出 “ mìngmíng ”这个词 。