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【单选题】
美国一项最新调查发现,儿童每天喝碳酸饮料越多,就更容易出现攻击性、注意力不集中以及不合群等行为问题,其中每天喝4杯或4杯以上的儿童,破坏别人东西、与人吵架或殴打别人的可能性是不喝碳酸饮料儿童的两倍。下列说法与文意相符的一项是A.
碳酸饮料对成年人的行为不会产生任何影响
B.
只要限制孩子喝碳酸饮料就能减少其攻击性
C.
常喝碳酸饮料的儿童可能比较好斗
D.
碳酸饮料是导致儿童不良行为的最主要原因。
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皮皮学刷刷变学霸
举一反三
【单选题】An indifference curve will become ________ the origin the more that the consumer considers the two goods as substitutes.
A.
less bowed-in towards
B.
more bowed-in towards
C.
less bowed-out from
D.
more bowed-out from
【单选题】When a consumer spends less time enjoying leisure and more time working, she has
A.
l ower income and therefore cannot afford more consumption
B.
lower income and therefore can afford more consumption.
C.
higher income and therefore cannot afford more consumption.
D.
higher income and therefore can afford more consumption
【简答题】政府采购应当遵循的原则包括（ ）。
【单选题】An indifference curve will become ________ the origin the more that the consumer considers the two goods as complements.
A.
more bowed-in towards
B.
less bowed-in towards
C.
less bowed-out from
D.
more bowed-out from
【简答题】A consumer uses the product featured in a bandwagon ad._________A consumer becomes more popular._________
【简答题】政府采购应当遵循的原则有（ ）。
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