What does the passage mainly discuss? According to the passage, the highest amount of pheromone vapor is found

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问题 What does the passage mainly discuss?
According to the passage, the highest amount of pheromone vapor is found

选项 A、in the receptors of the ants
B、just above the trail
C、in the source of food
D、under the soil along the trail

答案B

解析

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托福（TOEFL）

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What does the passage mainly discuss? According to the passage, the highest amount of pheromone vapor is found

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CompanyInnovationA.InashabbyofficeindowntownManhattan,agroupof30AI(artificialintelligence)programmersfrom

Thievesoftentargetstudents’homesbecausestudents______.twomusicalinstruments

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WhichpiechartshowstheagesoftheAsianstudentssurveyed?WhichbarchartshowsthepercentageofAsianstudentswhomade

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