VOA慢速英语:Herbert Hoover: Blamed

orphan - n. a child whose parents are dead

thrive - v. to grow or develop successfully : to flourish or succeed

benefit - n. a good or helpful result or effect

consumption - n. the use of something

boom and bust - n. a rapid increase in growth or economic success, followed by sudden economic losses

opportunity - n. an amount of time or a situation in which something can be done

prosperity - n. the state of being successful usually by making a lot of money

morale - n. the feelings of enthusiasm and loyalty that a person or group has about a task or job

insufficient - adj. not having or providing enough of what is needed : not sufficient