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https://online2.tingclass.net/lesson/shi0529/0008/8435/EC310.mp3

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Topics: Famous Americans: Clara Barton; The California Gold Rush; problem versus issue versus concern; cordless versus wireless; brothers and sisters

Words:

medical supplies

front lines

angel

in charge of

to advance

victim

to rush

word spread

to pan for gold

influx

saloon

problem

issue

concern

cordless

wireless

sister

brother