gre閱讀技巧從主題句能了解到的內(nèi)容

　　gre閱讀技巧是做好閱讀的一種方式，學(xué)生平時(shí)在練習(xí)閱讀題的時(shí)候更應(yīng)該注重這些技巧的培養(yǎng)和應(yīng)用。比如，gre閱讀并不需要全文通讀，其實(shí)只要讀懂全文的第一句話(huà)你就能了解很多信息。下面針對(duì)gre閱讀這個(gè)技巧舉個(gè)例子。

　　Over the years, biologists have suggested two main pathways by which sexual selection may have shaped the evolution of male birdsong.

　　這是本文的主題句，告訴我們一下的信息：

　　1. 本文探討的是一個(gè)現(xiàn)象，是關(guān)于鳥(niǎo)的歌曲的性選擇問(wèn)題。

　　2. 本文是一個(gè)新老觀點(diǎn)對(duì)比型的文章，關(guān)鍵詞在第一段中間或者第二段開(kāi)頭

　　3. 本文談到了進(jìn)化論，那么在文章后面很可能會(huì)否定這個(gè)說(shuō)法，并且可能會(huì)進(jìn)行批駁。

　　4. 下文會(huì)以性?xún)?nèi)和性間選擇分別展開(kāi)進(jìn)行論述。

　　In the first, male competition and intrasexual selection produce relatively short, simple songs used mainly in territorial behavior. In the second, female choice and intersexual selection produce longer, more complicated songs used mainly in mate attraction; like such visual ornamentation as the peacocks tail, elaborate vocal characteristics increase the males chances of being chosen as a mate, and he thus enjoys more reproductive success than his less ostentatious rivals.

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