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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他们绝对信任学生的能力，深信每一名孩子都有潜能成为心目中要成为的人物。(havefaithin)

从杭州坐旅游车向西南方向走大约两小时左右可以到达一个叫瑶琳的旅游胜地。(touristattraction)

Thefirstsmallcamerawasinventedin1685,butitwasjustacamera.Itwasalongtimebeforepeoplefiguredouthowtomake

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ParkingProblem;Forbiddenin【D1】percentofstreetsReason:Buildingapartmentsand【D2】ismoreprofitable,hencefew