如图所示，两个等边三角形，两个矩形，两个正方形，两个菱形各成一组，每组中的一个图形在另一个图形的内部，对应边平行，且对应边之间的距离都相等，那么两个图形不相似的一组是（　　）

给划线字选择恰当读音。

和  ①hé　②huó　③huò  ④hè　⑤hú

和平____    一唱一和____

和面____    和药____

    There are two ways to look at this question ____relating to eggs in general or to the chicken egg specifically. Either way, the answer is the same: the egg came before the chicken.____ the case of eggs in general, animals such as dinosaurs were laying eggs long before the modern chicken came into existence,____ (mean) that in this sense, the egg predated (早于) the chicken by thousands of years. As for the chicken egg specifically , according to NPR's Robert Krulwich, the modern chicken____ (hatch 孵化) from an egg, meaning the egg came first.

    The key to understanding the answer, and indeed the question itself, is to understand what the question is getting at. The dilemma is to understand ____ a chicken-like bird transformed into____ is known as a modern chicken after being hatched or whether two chicken-like birds ____ (lay) and fertilized an egg that then hatched a fully formed chicken. In this case, the latter option is the most realistic, therefore answering the question of which came first.____ (essential), a bird that was similar to a hen and another bird that is similar to ____ rooster combined their genetic material, leading to a gene mutation (突变) that resulted in the chicken that is____(good) known and loved today.