42、American restaurants serve large portions because Americans

　　A．have big bellies

　　B．value quantity

　　C．want enough nutrition

　　D．are mostly rich

　　【答案】：B

　　43、what happened in America in the 1970S?

　　A．The restaurants began to serve smaller portions

　　B．Health experts advised people to eat less

　　C．May American tried to get slim

　　D．the America waistline started to expand

　　【答案】：D

　　44、what does the survey indicate?

　　A．20 percent Americans want smaller portions

　　B．57 percent Americans earn $150.000 per year

　　C．Low-income American prefer large portions

　　D．23 percent Americans earn less than $25.000per year

　　【答案】：C

　　45、which of the following is NOT true of walking class Americans?

　　A．they live from paycheck to paycheck

　　B．they dont have the habit of saving money

　　C．they work long hours

　　D．the want to be healthy eaters

　　【答案】：B

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