Prep1 17

clairette

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37.  (32356-!-item-!-188;#058&006101)

Capuchin monkeys in Venezuela

oftenrub a certain type of millipede<!-- /* Font Definitions */ @font-face    {font-family:宋体;    panose-1:2 1 6 0 3 1 1 1 1 1;    mso-font-alt:SimSun;    mso-font-charset:134;    mso-generic-font-family:auto;    mso-font-pitch:variable;    mso-font-signature:3 135135232 16 0 262145 0;}@font-face    {font-family:Tahoma;    panose-1:2 11 6 4 3 5 4 4 2 4;    mso-font-charset:0;    mso-generic-font-family:swiss;    mso-font-pitch:variable;    mso-font-signature:1627421319 -2147483648 8 0 66047 0;}@font-face    {font-family:"\@宋体";    panose-1:2 1 6 0 3 1 1 1 1 1;    mso-font-charset:134;    mso-generic-font-family:auto;    mso-font-pitch:variable;    mso-font-signature:3 135135232 16 0 262145 0;}@font-face    {font-family:楷体_GB2312;    panose-1:2 1 6 9 3 1 1 1 1 1;    mso-font-charset:134;    mso-generic-font-family:modern;    mso-font-pitch:fixed;    mso-font-signature:1 135135232 16 0 262144 0;}@font-face    {font-family:"\@楷体_GB2312";    panose-1:2 1 6 9 3 1 1 1 1 1;    mso-font-charset:134;    mso-generic-font-family:modern;    mso-font-pitch:fixed;    mso-font-signature:1 135135232 16 0 262144 0;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal    {mso-style-parent:"";    margin:0cm;    margin-bottom:.0001pt;    text-align:justify;    text-justify:inter-ideograph;    mso-pagination:none;    font-size:10.5pt;    font-family:"Times New Roman";    mso-fareast-font-family:宋体;    mso-font-kerning:1.0pt;} /* Page Definitions */ @page    {mso-page-border-surround-header:no;    mso-page-border-surround-footer:no;}@page Section1    {size:612.0pt 792.0pt;    margin:72.0pt 90.0pt 72.0pt 90.0pt;    mso-header-margin:36.0pt;    mso-footer-margin:36.0pt;    mso-paper-source:0;}div.Section1    {page:Section1;}--> 马陆，千足虫 into their fur. Secretions of these millipedes have been shown to contain two chemicalsthat are potent 威力强大的mosquito repellents驱虫剂, and mosquitoescarry parasites that debilitate使身体虚弱the capuchins.  Therubbing behavior is rare except during the rainy season, when mosquitopopulations are at their peak. Therefore, the monkeys probably rub the millipedes into their furbecause doing so helps protect them against mosquitoes.

Which of the followingwould it be most useful to determine in order to evaluate the argument?

(A) Whether the two chemicals provide any protection for themillipedes against their own predators

(B) Whether the type ofmillipede used by the capuchin monkeys in Venezuela

is found in other partsof the world

(C) Whether animalsother than capuchins rub insects of any kind into their fur

(D) Whether the onlytime the millipedes are readily available to the capuchins is during the rainyseason

(E) Whether secretionsof any other insects accessible to the capuchins contain chemicals that repel mosquitoes

答案是D，为什么A错？

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16.  (27621-!-item-!-188;#058&003223)

Most of the world'ssupply of uranium currently comes frommines.  It is possible to extract uraniumfrom seawater, but the cost of doing so is greater than the price that uraniumfetches on the world market.  Therefore,until the cost of extracting uranium from seawater can somehow be reduced, thismethod of obtaining uranium is unlikely to be commercially viable.

Which of the followingwould it be most useful to determine in evaluatingthe argument?

(A) Whether the uraniumin deposits on land is rapidly being depleted

(B) Whether mosturanium is used near where it is mined

(C) Whether there areany technological advances that show promise of reducing the cost of extractinguranium from seawater

(D) Whether the totalamount of uranium in seawater is significantly greater than the total amount ofuranium on land

(E) Whether uranium canbe extracted from freshwater at a cost similar to the cost of extracting itfrom seawater

答案是A,C为什么错？

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clairette

为啥每次发都有乱码啊！！！！！郁闷！！！

dorislee1991

这贴发的。。。可真够杯具的

winnemashi

哈哈 楼上笑死我了