people live longer and stay (healthy)today than they did 50years ago 怎么填?

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• These days people stay _______(health)and live longer than they did 50 years ago.
• people live longer and stay (healthy)today than they did 50years ago 怎么填?
• These days people stay _______(health)and live longer than they did 50 years ago.
• people live longer and stay (healthy)today than they did 50years ago 怎么填?
• 英语翻译Betty's mum:It's getting late,Betty.Betty:Nearly finished!I'm doing a composition:Is life today better or worse than it was 50 years ago?Betty's mum:And what do you think?Betty:I think it's better.The most important difference is that people are healthier today,and they live longer than they did in the past.Betty's mum:That's true.The advantage is that we know more about medicine today.We're better at preventing illness.But people don't eat as wel
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• 边长为8厘米的正方体铁块放在一个面积为100厘米2的水平桌面上，求：桌面受到的压强？（ρ铁=7.9×103千克/米3，g=10N/kg）