小马元勋 2007-5-16 23:17
【转帖】阅读加试目前为止最详细机经
[color=#ff0000]转自台湾2007版橘宝书,强烈要求HORSE去买一本共享[/color]mE
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[size=7]进化论[/size]0OL7p8R V2b!hd+t6y1}*X
[size=3]机经[font=Times New Roman]1[/font][/size]
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[size=3]开头,达尔文认为自然选择[font=Times New Roman] are too slow for people to witness.[/font][/size]
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[size=3]([font=Times New Roman]1[/font])[font=Times New Roman]witness [/font]是什么意思,选[font=Times New Roman] observe[/font][/size]vI h
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[size=3]([font=Times New Roman]2[/font])为什么达尔文这么认为?选自然选择要进行很长一段时间。[font=Times New Roman]R`W:Cf*p\iV:K
[/font]科学家那[font=Times New Roman]
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guppy[/font]做试验。[/size]O.F,d&`3x
[size=3]([font=Times New Roman]3[/font])试验描述[font=Times New Roman] guppy [/font]总是[font=Times New Roman] grow as quickly as possible to mate,[/font]产生[font=Times New Roman] as many offsprings. [/font]早熟的代价是[font=Times New Roman] life span [/font]变短,每个[font=Times New Roman] offspring [/font]也不能得到太多母[font=Times New Roman] guppy [/font]的[font=Times New Roman] engergy[/font]。[font=Times New Roman] the risk of early death are offset by other risks.[/font]说的这一段是什么作用?前一段末尾说了,[font=Times New Roman]R put the predications into test.[/font]这段是描述试验,测试猜测。[/size]:e0U'K#[
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[size=3]([font=Times New Roman]4[/font])[font=Times New Roman]offset [/font]这个词的意思?[font=Times New Roman]balanced[/font]。[font=Times New Roman] R [/font]又测试,把[font=Times New Roman] guppy [/font]从捕食者多的地方放到捕食者少的[font=Times New Roman] pool [/font]里养,他们相对晚熟,活的更久,每窝产更少的蛋,蛋的个头比[font=Times New Roman]5\ K9sv
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[/font]对比组都大。[/size]
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[size=3]([font=Times New Roman]5[/font])对上述内容那个说法不对?对,每窝产更多卵。有些自然选择不需要人的干预[font=Times New Roman]-i;Jvf)N.WNu6k*`0@c
[/font]就能在短时间内发生。[/size]
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[size=3]([font=Times New Roman]6[/font])插入,插入内容是,在这种情况下,生物学家只要活的久就能观察到变化。某地干旱,一对夫妇学者观察那里的一种鸟,[font=Times New Roman] birds with small beaks only eat small seeds. birds with long beaks
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could eat large seeds because their beaks are strong enough to break the large seeds.[/font]干旱的时候小种子少,嘴短的鸟死了,嘴长的鸟[font=Times New Roman]
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[/font]存活。存活的鸟和第二年的鸟交配,后代的鸟嘴整体变长。雨量又充足的时候,又足够小种子,这个时候,新出生的鸟的鸟嘴又变短了。[/size]:og1|0ba9E
[size=3]([font=Times New Roman]7[/font])长嘴鸟的优势?打碎种子。[/size]8i:I"biz7s
[size=3]([font=Times New Roman]8[/font])鸟嘴和[font=Times New Roman] guppy [/font]试验的共同点?好像选的都在相对短的时间发生,自然选择人类可以观察到。[/size]S @5z|&ah[2Oz
[size=3]([font=Times New Roman]9[/font])雨量充足的日子鸟嘴又变短了,忘了考的什么题目。[/size]
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[size=3]([font=Times New Roman]10[/font])考察全文主要内容的多选[/size]
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[size=3]机经[font=Times New Roman]2[/font][/size]
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[size=3]关于进化论[font=Times New Roman]/[/font]自然选择[font=Times New Roman](natural selection)[/font],达尔文[font=Times New Roman](Darwin)[/font]的自然选择学说[font=Times New Roman](natural selection) [/font]认为,进化[font=Times New Roman](evolution)[/font]的发生需要很长的时间[font=Times New Roman](long time)[/font]才能验证,这种限制是[font=Times New Roman]Darwin [/font]当时不能[font=Times New Roman]experiment [/font]证明[font=Times New Roman] nature selection [/font]的原因(第一题考),然后讲了现代生物学家发现在短期可以观察到[font=Times New Roman] nature selection [/font]给动物的一些特性带来的变化。[/size]