如图是植物细胞和动物细胞的结构示意图，据图回答问题：（说明：中填图中序号，“横线”上填文字．）

五四运动90周年前夕，《人民论坛》杂志以如何理解五四精神为主题，进行了一次专题调研。调研结果如右图所示。你认为在对于五四精神的理解上，40.2%的受访者最可能选择的是(　　)

    Are you ready for adventure (冒险)? Then Sunny Shores Sea Camp is the place for you! The activities there are all about the sea.
At Sunny Shores Sea Camp, you can get excited and improve your skill-level. You can enjoy the wonders of Sunny Island. From diving（潜水）to sailing, sea science to seafood, Sunny Shores Sea Camp offers courses for your different interest. You can also learn about the sea environments of Sunny Island. It is hard for you to find anywhere else like that.
    Whether you're a beginner or already an expert (专家), Sunny Shores Sea Camp is a great place that brings together campers from all over the world.
    Wonderful memories and new friends are waiting for you at Sunny Shores Sea Camp!
Camp Activities: Adventure . Sea Biology. Diving . Sailing . Windsurfing
Camp Address: Sun Bay , South Florida 000634
Dates: June 28 - July 18 , July 21 -August 9
Cost Week: $600 - $900
Campers Ages: From 13 to 17
Contact us: Sign up at www.sunnyshoresseacamp.org! Or call 800-645-14231

关于月球的形成，科学家提出了不同的假说：

分裂说：月球本来是地球的一部分，后来由于地球转速太快，把地球上一部分物质抛了出去，这些物质脱离地球后形成了月球。

同源说：月球和地球在同一个浮动星云内同时形成。

碰撞说：在太阳系形成的过程中，地球与一个较大天体发生了剧烈的碰撞，激射到太空中的地球物质和该碰撞天体的残骸不断相互吸引，最终形成了月球。