小刘的收入全部购买面包可以买100单位，全部购买牛奶可以购买50单位，若只购买这两种商品，小刘在既定收入下达到效用最大化时预算约束线与无差异曲线切点所对应的切线的斜率为（假设牛奶位于横坐标，面包位于纵坐标）（）。<br/>

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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单选

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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单选

There have been ( ) demands by taxi drivers that ride-hailing be withdrawn from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

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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单选

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 -0.5

B -1

C -2

D -3