甲需要购买A、B两种商品，共花费120元，已知A商品的价格为2元，B商品的价格为4元，甲在两种商品上的效用函数为U=AB。现在A商品的价格变为2.88元，B商品未变，为保持价格未变之前的最大效用水平，甲在两种商品上的支出需增加多少元？（）

单选

Spanish researcher found that our preference for engaging in activities earlier

A knowledge B vision C intuition D perception

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单选

Today the latest investment boom in the USA is in full swing, but instead ( ) st

A from B in C on D of

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It has won many ( ) titles such as a city of parks, a city of forests and an eco

A honorary B honorific C honest D honored

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单选

The survival of Notre Dame through 850 years of political turbulence through war

A changes B makes C binds D finds

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单选

Warren Truss, Australia’s ( ) prime minister, said at a news conference on Frida

A behalf B vice C representative D deputy

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单选

Business blockbusters are a reminder that dynamic markets can ( ) consumers with

A receive B benefit C achieve D exploit

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单选

Although all this may ( ) their revenues, America’s internet giants could also b

A dent B surge C obstruct D facilitate

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There have been ( ) demands by taxi drivers that ride-hailing be withdrawn from

A consistent B persistent C resistant D insist

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The emergence of sound in the 1920s ( ) Hollywood as the centre of the global fi

A treated B cemented C created D witnessed

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It appears as ( ) the time lost by extended lunch break could be avoided.

A so B which C if D that

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A 24

B 23

C 21 D. 22