55. Which of the following statements shows a correlation?
(A) Autism can be detected when children are about 2 years old.
(B) Some children are diagnosed with autism after they receive vaccinations.
(C) Science has proven that vaccinations do not cause autism.
(D) Parents refuse to have their two-year-olds vaccinated.
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以下哪項陳述顯示了關聯性? (A) 自...
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