题目内容:
ResearcherswillcollectallthefollowingEXCEPT__________. A.geneticsamplesfrompeopleinthestudy
B.biologicalsamplesfrompeopleinthestudy
C.samplesfromthehomesofthewomenandtheirbabies
D.samplesofairandwaterfromhospitals
参考答案:【答案仅供学习,请勿对照自行用药等】
答案解析: