47.According to the passage, which of the following factors has contributed to declining trust in vaccines?
(A) Misinformation spreading through social media
(B) A decrease in the effectiveness of vaccines over time
(C) A lack of scientific studies supporting vaccine safety
(D) A global shortage of vaccines limiting public access

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統計: A(9), B(0), C(0), D(0), E(0) #3427205

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47. According to th...
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