题型：语法填空（语篇） 题类：常考题 难易度：困难
湖北省武汉市钢城四中2017-2018学年高一下学期英语3月月考试卷
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.
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