According to the passage, compared to 3G mobile phones, the second-generation phones ______. "The double-blind laboratory tests

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问题 According to the passage, compared to 3G mobile phones, the second-generation phones ______.
"The double-blind laboratory tests" means ______.

选项 A、nobody taking part in the test knows if the 3G base station is transmitting signals
B、only the subjects in the test know if the 3G base station is transmitting signals
C、no researchers know if the 3G base station is transmitting signals
D、everyone in the test knows if the 3G base station is transmitting signals

答案A

解析

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本试题收录于：大学英语三级B级题库大学英语三级分类

大学英语三级B级

大学英语三级

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According to the passage, compared to 3G mobile phones, the second-generation phones ______. "The double-blind laboratory tests

大学英语三级B级

大学英语三级

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AlthoughFrench,German,AmericanandBritishpioneershaveallbeencreditedwiththeinventionofcinema,theBritishandthe

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Toachorusofangryshoutsandinsults,a【C1】______(wealth)Chicagocouplehavebeenchargedwithchildcrueltyafterleaving

Ms.Zellinger:Yes,IwouldliketospeaktoJosephAbernathy,please.Receptionist:I’msorry,Mr.Abernathyisoutoftheoff

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医生甲退休后，擅自为人看病2年多。某日，甲为乙治疗，需注射青霉素。乙自述以前曾注射过青霉素，甲便未做皮试就给乙注射青霉素，乙因青霉素过敏而死亡。关于本案，下列哪一选项是正确的?(2013年卷二18题)

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