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v.预料；预计
require
v.需要
harm
v.伤害
physical
v.身体的；体力的
thanks to
多亏；归功于
health care
医疗保健（服务）
once in a while
偶尔；有时；间或
[r?’kwa??]
[’ef?t]
[’f?z?kl]
[?k’spekt]
_________better__________, most
people are living healthier lives.
New words and phrases
Pre-reading
Someone who is born today can______
to live longer before.
In the past, people’s jobs ________ more_____________.
You should only have it_____________.
Thanks to
health care
required
physical effort
expect