問題詳情

10. A number of people who have tested positive for a new strain of bird flu in China have had no history of contact with _______, adding to the mystery about the virus that has killed 16 to date.
(A) sanitation
(B) prescription
(C) poultry
(D) hygiene)

參考答案

答案:C
難度:簡單0.766667
統計:A(13),B(11),C(184),D(18),E(0)

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