问一道GMAT数学和CR
Inordertowithstandtidalcurrents,juvenilehorseshoecrabsfrequentlyburrowinthesand.Suchburrowingdiscouragesbarnaclesfromclingingtotheirshells.Whenfullygrown,however,thecrabscanreadilywithstandtidalcurrentswithoutburrowing,andthustheyacquiresubstantialpopulationsofbarnacles.Surprisingly,inareaswheretidalcurrentsareveryweak,juvenilehorseshoecrabsarefoundnottohavesignificantbarnaclepopulations,eventhoughtheyseldomburrow.Whichofthefollowing,iftrue,mosthelpstoexplainthesurprisingfinding?
A.Tidalcurrentsdonotthemselvesdislodgebarnaclesfromtheshellsofhorseshoecrabs.
B.Barnaclesmostreadilyattachthemselvestohorseshoecrabsinareaswheretidalcurrentsareweakest.
C.Thestrengthofthetidalcurrentsinagivenlocationvarieswidelyoverthecourseofaday.
D.Averylargebarnaclepopulationcansignificantlydecreasetheabilityofahorseshoecrabtofindfood.
E.Untiltheyarefullygrown,horseshoecrabsshedtheirshellsandgrownewonesseveraltimesayear.
OA是E,想不通为什么.
数学题见下图.
补充一个GWD的SC
In1713,AlexanderPopebegan｛histranslationoftheIlliad,aworkthat,takinghimsevenyearsuntilcompletion,andthatliterarycriticSamuelJohnson,Pope’scontemporary,pronounced｝thegreatesttranslationinanylanguage.
B.histranslationoftheIlliad,aworkthattookhimsevenyearstocompleteandthatliterarycriticSamuelJohnson,Pope’scontemporary,pronounced
D.translatingtheIlliad,aworkthattooksevenyearsuntilcompletionandthatliterarycriticSamuelJohnson,Pope’scontemporary,pronounceditas
OA是B,我觉得D也没什么问题啊,OA说it指代不清,可是我觉得pronounceditas当中的it明显指代上文所说的work啊,怎么会指代不清呢?
PS：看了2L的回答that...SJ,...,pronouncedas
其实就是SJ,...,pronouncedthatas
that省略可以,可以B选项连as都省略了,pronouncedthegreatesttranslationinanylanguage.感觉怪怪的.
![请各位帮忙解两道数学题,是同济第五版高数中的.求下列两题的极限：(1)当x→0时Lim[(ax+bx+cx)/3]1/x,(a>0,b>0,c>0);(2)当x→π/2时Lim(sinx)tanx.请尽快答复我,谢谢!不好意思，给您造成困扰，从word上粘贴](/UploadFile/wdimg/2026/3079098375/61/1977088995.jpg)
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