One reason for malaria to be widespread now is that ______ What is the most difficult part of Lanzaro’s project?

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问题 One reason for malaria to be widespread now is that ______
What is the most difficult part of Lanzaro’s project?

选项 A、Spreading malaria-resistant genes into natural mosquito populations.
B、Raising malaria-resistant mosquitoes.
C、Making genes that block the transmission of malaria.
D、Identifying malaria-resistant genes.

答案A

解析第三段第一句明确指出：该项实验的最难之处就是如何让实验室中的这些基因工程蚊虫把它们的基因传播到自然种群中去。故A项正确。其他三项从文中可推断都是已实现的。

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在职申硕（同等学力）英语

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One reason for malaria to be widespread now is that ______ What is the most difficult part of Lanzaro’s project?

在职申硕（同等学力）英语

Thefactthattheearth’ssurfaceheats______providesaconvenientwaytodivideitintotemperatureregions.

Therearehiddenfactorswhichscientistscall"feedbackmechanisms".Nooneknowsquitehowtheywillinteractwiththechangin

Thegeneraltopicofthepassageis______.WhichofthefollowingstatementsisNOTTRUEaccordingtothepassage?

Inthefirstparagraph,theauthortellsusthatAsiaticlions______Whatimpressedtheauthormostwhenhewenttowatchthe

AmusselgripsahardsurfaceveryfirmlytoScientistsarenotthinkingofusingmusselstoproducethesupergluemainlybeca

Oneofthereasonswhyscienceisimportantforchildrenisthatmanyofthemwill______Peoplewithascientificattitude___

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Usuallyyouwillbe(morelikely)tofindinsects(if)youexaminefinertwigs(ratherthan)the(coarse)partsoftrees.

InternationalstudentsinChinausuallyhaveahardtimewritingChinesecharactersofnumerous______.

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下列唐代作家中，参加政治革新失败后被贬为永州司马的是()

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D触发器的应用电路如图所示，设输出Q的初值为0，那么，在时钟脉冲CP的作用下，输出Q为：

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