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What can be done about mass unemployment? All the wise heads agree: there’re no quick or easy answers. There’s work to be done, but workers aren’t ready to do it—they’re in the wrong places, or they have the wrong skills. Our problems are “structural,” and will take many years to solve. But don’t bother asking for evidence that justifies this bleak view. There isn’t any. On the contrary, all the facts suggest that high unemployment in America is the result of inadequate demand. Saying that there’re no easy answers sounds wise, but it’s actually foolish: our unemployment crisis could be cured very quickly if we had the intellectual clarity and political will to act. In other words, structural unemployment is a fake problem, which mainly serves as an excuse for not pursing real solutions. The fact is job openings have plunged in every major sector, while the number of workers forced into part-time employment in almost all industries has soared. Unemployment has surged in every major occupational category. Only three states, with a combined population not much larger than that of Brooklyn, have unemployment rates below 5%. So the evidence contradicts the claim that we’re mainly suffering from structural unemployment. Why, then, has this claim become so popular? Part of the answer is that this is what always happens during periods of high unemployment—in part because experts and analysts believe that declaring the problem deeply rooted, with no easy answers, makes them sound serious. I’ve been looking at what self-proclaimed experts were saying about unemployment during the Great Depression; it was almost identical to what Very Serious People are saying now. Unemployment cannot be brought down rapidly, declared one 1935 analysis, because the workforce is “unadaptable and untrained. It cannot respond to the opportunities which industry may offer.” A few years later, a large defense buildup finally provided a fiscal stimulus adequate to the economy’s needs—and suddenly industry was eager to employ those “unadaptable and untrained” workers. But now, as then, powerful forces are ideologically opposed to the whole idea of government action on a sufficient scale to jump-start the economy. And that, fundamentally, is why claims that we face huge structural problems have been multiplying: they offer a reason to do nothing about the mass unemployment that is crippling our economy and our society. So what you need to know is that there’s no evidence whatsoever to back these claims. We aren’t suffering from a shortage of needed skills; we’re suffering from a lack of policy resolve. As I said, structural unemployment isn’t a real problem, it’s an excuse—a reason not to act on America’s problems at a time when action is desperately needed.
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参考答案:
举一反三
【单选题】下列选项中不属于结构化程序设计方法的是:
A.
自顶向下
B.
逐步求精
C.
可复用
D.
模块化
【判断题】铣刀是典型的多刃刀具,加工过程有几个刀齿同时参加切削,铣削的生产率高于刨削加工。
A.
正确
B.
错误
【单选题】下列关于面向对象软件测试模型的说法中,正确的是( )
A.
面向对象软件的每一个测试活动,时间上都是连贯的
B.
面向对象软件的各个测试活动之间都是首尾相接的
C.
面向对象软件的测试任务必须遵循严格的执行顺序
D.
面向对象软件的测试活动通常是迭代与渐进的
【单选题】下列关于面向对象软件测试的说法中,正确的是 ( )
A.
在测试一个类时,只要对该类的每个成员方法都进行充分的测试就完成了对该类充分的测试
B.
在存在多态的情况下,为了达到较高的测试充分性,应对所有可能的绑定都进行测试
C.
假设类B是类A的子数,如果类A已进行了充分的测试,在测试类B时不必测试任何类B继承类A的成员方法
D.
对于一棵继承树上的多个类,只是处于叶节点的类需要测试
【多选题】铣刀的切削刃有几个?
A.
1
B.
2
C.
3
D.
4
【单选题】( 14 )下列关于面向对象软件测试的说法中,正确的是 A )在测试一个类时,只要对该类的每个成员方法都进行充分的测试就完成了对该类充分的测试 B )在存在多态的情况下,为了达到较高的测试充分性,应对所有可能的绑定都进行测试
C.
)假设类 B 是类 A 的子类,如果类 A 已进行了充分的测试,在测试类 B 时不必测试任何类 B 继承类 A 的成员方法
D.
)对于一棵继承树上的多个类,只有处于叶节点的类需要测试
【单选题】下列关于面向对象软件测试的说法中,不正确的是 ______。
A.
面向对象软件的白盒测试不能不加改变地照搬传统软件的白盒测试准则
B.
在存在多态的情况下,为了达到较高的测试充分性,应对所有可能的绑定都进行测试
C.
假设类B是类A的子类,如果类A已进行了充分的测试,在测试类B时不必测试任何类B继承类A的成员方法
D.
对于一棵继承树上的多个类,处于叶子节点的类也需要测试
【单选题】下列关于面向对象软件测试的说法中,不正确的是______。 A) 面向对象软件的白盒测试不能不加改变地照搬传统软件的白盒测试准则 B) 在存在多态的情况下,为了达到较高的测试充分性,应对所有可能的绑定都进行测试 C) 假设类B是类A的子类,如果类A已进行了充分的测试,在测试类B时不必测试任何类B继承类A的成员方法 D) 对于一棵继承树上的多个类,处于叶子结点的类也需要测试
A.
B.
C.
D.
【单选题】下列选项中不属于结构化程序设计方法的是( )。
A.
自顶向下
B.
逐步求精
C.
模块化
D.
司复用
【单选题】下列关于面向对象软件测试的说法中,正确的是 (6) 。
A.
在测试一个类时,只要对该类的每个成员方式都进行充分的测试就完成了对该类充分的测试
B.
存在多态的情况下,为了达到较高的测试充分性,应对所有可能的绑定都进行测试
C.
假设类B是类A的子类,如果类A已经进行了充分的测试,那么在测试类B时不必测试任务类B继承自类A的成员方法
D.
对于一棵继承树上的多个类,只有处于叶子节点的类需要测试
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