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问题 选择题
对于R上可导的任意函数f（x），若满足（x-1）f′（x）≥0，则必有

[ ]

A.f（0）+f（2）＜2f（1）
B.f（0）+f（2）≤2f（1）
C.f（0）+f（2）≥2f（1）
D.f（0）+f（2）＞2f（1）



答案

答案：C

问答题

在春天里观察两只鸟

陈峻峰

不是一棵，也不是两棵，而是一排水杉，在我居住的城市的东南，向天空高高地直立着，高过了那些栗树、梧桐、刺槐和雪松。

两只鸟，我们权且可以称它们为山喜鹊吧，在早春里飞来。我以为我认识它们，我以为它们是去年的那一对。它们的巢还在，也就是说它们原来的家还在，经过了去冬的那场大雪，看上去好像依然完好无损。而且，就一只鸟巢而言，它的高度、支点、造型，都大抵可以称得上经典。

两只鸟飞来，先在空中盘查了一会，停留在附近的一棵树上，对去年的那只鸟巢进行确认。我不知道上帝赋予它们怎样的心灵提醒和暗示，也不知道它们依循了怎样的信息和气息，能够从浩渺的远方，准确地找到这一排杉树，找到它们的巢穴。我猜它们一定会先检查它们一冬没有居住的房子，然后进行外墙的修补，并且把卧室装饰一新。它们要在那里缠绵相拥、谈论天气和诗歌、生儿育女，当然也要在那里抵御今年的飓风、雷电和大雨。

很快，我发现我错了。那两只鸟并未干这些事情，它们选择了另一棵树，开始建造一个新的巢。循着我的目光从左到右看过去，如果去年的那个巢在第三棵水杉上，那么，它们选择的就是第五棵。

现在我似乎知道了，这两只鸟不是去年的那两只鸟，而应该是去年那两只鸟的儿女吧。年轻的一代，风华正茂，奋发有为，热爱生活，富于幻想，它们怎肯居住父母的旧巢呢。它们的家族不遗传依赖和懒惰，这是天然的风范；只有人类才会有不肖子孙，好吃懒做，在父辈的财富中坐享其成坐吃山空。鸟类不会。它们担当不起上帝的指责和同类的嘲笑。

当然，建造一个家是复杂的、艰难的。我无法知道那两只鸟整个春天的辛勤和劳苦，我只能通过它们飞翔忙碌的身影对它们进行判断和猜想。就这样，有一天，我像是突然发现，它们的家建好了。一只巨大的鸟巢也像是突然从枝头上长出来，和树完美地融成一体。我能感觉到巢的坚固和安稳，也能想象那卧室的簇新和舒适。

那天，让我觉得仿佛整个春天里， 我都在向它们仰着脸。年轻人的新巢建在第五棵树上，父母的旧居建在第三棵树上；父母亲不在了，高高树顶的旧居空着，仿佛一个家族的图腾和标志；从我的角度看去，直立的杉树举着那只旧巢，更像是举着一个祖宗的牌位。那么，这两只鸟选择在第五棵树建造自己的新家，是想虔诚守着父母的遗址和祖宗的牌位。那么，与之间隔一棵树的距离，是不是想和旧时的文化传统既不挨得太远，又不挨得太近。它们在生命的繁衍和承续中，需要有自己年轻独立的思想，需要创造一种完全属于自己的信心、锐气和生活。

而我必须自觉离开了，我要做的不是对两只鸟进行观察和猜测，而是能否进行自身的反省，包括我们对待美妙自然和可爱生灵的态度和行为。旧巢和新巢都建在树的高处，那几乎是树的梢顶了。它们未必不知道这要担当多么大的风险，但它们更知道这世上真正的风险，来自人类。因此它们把巢尽可能地建在高处，建在梢顶，那是对人类最明白无误的拒绝、痛斥和对峙。

那个悬在高空的巢穴，高高悬在我们的头顶之上的巢穴，不知是鸟类的天性不安，还是人类的巨大痛苦。

文章是围绕“我观察两只鸟”展开的，请梳理作者的思路。
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单项选择题

Passage Two

The idea of building "New Towns" to absorb growth is frequently considered a cure-all for urban problems. It is wrongly assumed that if new residents can be diverted from existing centers, the present urban situation at least will get no worse. It is further and equally wrongly assumed that since European New Towns have been financially and socially successful, we can expect the same sorts of results in the United States.
Present planning, thinking, and legislation will not produce the kinds of New Town that have been successful abroad. It will multiply suburbs or encourage developments in areas where land is cheap and construction profitable rather than where New Towns are genuinely needed.
Such ill-considered projects not only will fail to relieve pressures on existing cities but will, in fact, tend to weaken those cities further by drawing away high-income citizens and increasing the concentration of low-income groups that are unable to provide tax income. The remaining taxpayers, accordingly, will face increasing burdens, and industry and commerce will seek escape. Unfortunately, this mechanism is already at work in some metropolitan areas.
The promoters of New Towns so far in the United States have been developers, builders, and financial institutions. The main interest of these promoters is economic gain. Furthermore, federal regulations designed to promote the New Town idea do not consider social needs as the European New Town plans do. In fact, our regulations specify virtually all the ingredients of the typical suburban community, with a bit of political rhetoric (修辞) thrown in.
A workable American New Town formula should be established as firmly here as the national formula was in Britain. All possible social and governmental innovations as well as financial factors should be thoroughly considered and accommodated (容纳) in this policy. Its objectives should be clearly stated, and both incentives and penalties should be provided to ensure that the objectives are pursued. If such a policy is developed, then the New Town approach can play an important role in alleviating America’s urban problems.

Which of the following is not a side effect caused by building new towns

A．Industry and commerce will move away from metropolitan area.

B．The present cities’ tax income will be reduced because high income citizens will move to new towns.

C．Low-income families will have better housing conditions.

D．The remaining citizens in the present cities will be faced with heavier tax burdens.
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