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问题 单项选择题

凯恩斯主义认为货币政策传导变量为( )。

A．利率

B．货币供应量

C．超额存款准备金

D．基础货币

答案

参考答案：A

解析： 凯恩斯主义认为货币政策的传导变量是利率，而货币主义坚持认为货币供应量起主导作用。

选择题

如图所示，质量为m的物体，由高h处无初速滑下，至平面上A点静止，不考虑B点处能量转化，若施加平行于路径的外力使物体由A点沿原路径返回C点，则外力至少做功为（　　）

A．mgh

B．2mgh

C．3mgh

D．条件不足，无法计算
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单项选择题

Why is (111) fun What delights may its practitiopect as his reward First is the sheer joy of making things. As the child delights in his mud pie, so the adult enjoys building things, especially things of his own design. Second is the pleasure of making things that are useful to other people. Third is the fascination of fashioning complex puzzle-like objects of interlocking moving parts and watching them work in subtle cycles, playing out the consequences of principles built in from the beginning. Fourth is the joy of always learning, which springs from the (112) nature of the task. In one way or another the problem is ever new, and its solver learns something: sometimes (113) , sometimes theoretical, and sometimes both. Finally, there is the delight of working in such a tractable medium. The (114) , like the poet, works only slightly removed from pure thought-stuff. Few media of creation are so flexible, so easy to polish and rework, so readily capable of realizing grand conceptual structures.
Yet the program (115) , unlike the poet’s words, is real in the sense that it moves and works, producing visible outputs separate from the construct itself. It prints results, draws pictures, produces sounds, moves arms. Programming then is fun because it gratifies creative longings built deep within us and delights sensibilities we have in common with all men.

A．semantic

B．practical

C．lexical

D．syntactical
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