What does "impasse" probably mean? How did Dr. Edward Jenner solve the problem of smallpox?

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问题 What does "impasse" probably mean?
How did Dr. Edward Jenner solve the problem of smallpox?

选项 A、He kept on focusing on people who had smallpox.
B、He changed his way of thinking by turning to people without smallpox.
C、Dairymaids advised that he use cowpox to experiment.
D、He happened to discover cowpox and he experimented with it on dairymaids.

答案B

解析文中段一中第三、四句，第三段第二句都解释丁Doctor E.Jenner是如何解决此问题的，故选B。

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本试题收录于：职称英语卫生类C级题库职称英语分类

职称英语卫生类C级

职称英语

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What does "impasse" probably mean? How did Dr. Edward Jenner solve the problem of smallpox?

职称英语卫生类C级

职称英语

Youareaskedtowriteacompositioninwhichyougiveyourownopinionsonthefollowingstatement:Trafficandhousingpro

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Inthelate1960’s,manypeopleinNorthAmericaturnedtheirattentiontoenvironmentalproblems,andnewsteel-and-glassskysc

Earlyonemorning,morethanahundredyearsago,anAmericaninventorcalledEliasHowefinallyfellasleep.【R1】______Butheha

Youaregoingtoreadamagazinearticleaboutlearningtoflyaplane.Eightparagraphshavebeenremovedfromthearticle.Cho

CarsAreGoodfortheEnvironmentBritain’smotorindustryisplanningamajorpublicitycampaigntocounterwhatitseesas

Whenpeoplewithdepressiontriedtostopsmokingtheyare______.Howdidpeople,whonewlygaveupsmoking,easilyfeel?

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李某，32岁，右下后牙因龋坏严重已经作根管治疗。检查：司残根，叩诊(-)，无松动，X线片显示根充良好。该牙如要桩冠修复牙体预备时哪项不正确

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