[解析]
M:Thank you,Mrs.Johnson,for what you've shared with our listeners.Now,please tell us,do you sometimes feel worried about your daughter,now that she's grown up?
W:Oh,I worry about her like all parents do.After she graduated from medical school,she went to volunteer medical service in Africa.
M:Wow!
W:That's okay if communication was fine.But if there was no Internet or telephone connection,we could sometimes go two weeks without getting in touch with each other.That often worries me.
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