問題詳情

There is evidence that DHA plays a big role in the intellectual development of humans. In one study, doctors measured the DHAlevels of mothers at the time they __56___. Their children were then tested at 12 and 18 months of age to see how well they __57___things around them. The research team compiled data on __58___ each child focused on a toy. The toddlers ___59__ mothers had thehighest DHA levels at birth showed the greatest attention spans. These children focused for longer periods and spent much less timesimply ___60__, unfocused.
55.
(A) at
(B) with
(C) on
(D) against

參考答案

答案：C
難度：適中0.5625
統計：A(10),B(2),C(27),D(2),E(0)

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