根据下面材料,回答题。 Talking to Kids about SARS (非典)School age childr

根据下面材料,回答题。 Talking to Kids about SARS (非典)School age children may be learning a

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第2题_________

第2题_________A.He says there is emerging evidence that children absorb low-level

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第50题_________

第50题_________A.But this advantage also has a big drawback--up to 10% of the big

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第49题_________

第49题_________A.But this advantage also has a big drawback--up to 10% of the big

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