問題詳情
9. Hundreds of residents received free testing _____ from the city government to find out if their watercontained any harmful chemicals.
(A) kits
(B) trials
(C) zones
(D) proofs
參考答案
答案：A
難度：困難0.38
書單：沒有書單，新增
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testing kit篩劑 或是 檢測工具kit