设，则x=π/2是f（x）的（）． A.可去间断点 B.跳跃间断点 C.第二类间断点

现代文阅读：论述类文本阅读下面的文章，完成后面题目。（18分）

雅与俗 莫 邪

①从前倪云林雅士，因为不肯替张士信作画，有一天被张士信捉了起来，鞭打几死。可是他在被鞭打时，不发一言。有人问他缘故，他说：一开口就俗了。

②不得了，这样的雅士，连性命都不顾，真正少见。然而这样的做作，不也有一些太雅之嫌否？因为在我看来，不开口只能算作强硬不屈，是个好汉，与雅无关。如果存心要以此为雅，就未免太雅而成俗了。

③太雅成俗，正如《儒林外史》中所说的“雅得太俗”一样。当时一般斗方名士，动不动就饮酒看花，吟诗作赋，自命风雅，于是给吴敬梓大大地嘲讽了一阵，至今当为话柄。

④这种雅习，到了今天，似乎风流余韵，依然未绝，或者竟是变本加厉，有行必雅，无事肯俗。别的不必说，即以几个人的别号笔名而言，早已竭尽雅之奇观，不能不使人叹为雅之极致。

⑤我不是说，那些名字不雅。恰恰相反，我是承认它们的雅的。可是一人始倡，多人从风，任何雅事，都成了俗不可耐。正如宋之苏东坡是雅人，多雅事，明之唐伯虎、张孟晋之流，邯郸学步，扭捏作态，就使人要发呕了。

⑥要一定专为雅与俗下定义，当然不是容易的。不过我说，这里面似乎也有一些范围，除了始倡者雅，从风者俗外，还有有意者俗，无心者雅。倪云林之俗，我就为了他的有意。他本来是元末明初人，元人是每一个人都有一个别号的，所以他号为云林子，这就是他的俗的表征之一。至于他的故意嗜洁，无非学学朱元璋，也徒见其俗气熏人耳。

⑦莫君利哀（仿高君尔基的雅称）所写的《装腔作势》，就是为这些雅人写照的。我想要收集这项材料，恐怕古今中外不知多少，正可以车载“之”计量，汗牛“之”充栋吧——用两个“之”字，文气便雅。

⑧不过雅事只止文人有份，不识字的浑人是无份的。因此既有文人的太雅成俗，也就有了浑人的太俗成雅。党太尉的销金帐里，羊羔美酒，就是个明证。而梁山黑旋风开口老子，闭口铁牛，实在妩媚可爱，端的不俗。就是鲁迅笔底下的阿Q，几声我要……，我也认为是近代第一雅人。为什么呢？也不过为了他们的一片天真，无心于雅。其所言所行，前不见古人，后不见来者，却自然地绝妙千古，俗得太雅耳。

⑨文人中毕竟黄山谷是有点道理的：到了宣州，有人请他写字，他来者不拒，有求必应。有人因为他给了俗人，为他可惜，他就笑着说，有不俗的人，引一个来看看。这话真正痛快极了！反过来说，谁是雅人呢？谁不是俗人呢？于此，我们可以看出一些雅与俗的究竟来。

⑩我时常听见人们说，文章要做得“雅俗共赏”，方为妙文。这话，我有些不相信，因为雅能赏的，俗未必能赏；俗能赏的，不一定雅能赏。因此，我想，也许“雅俗不共赏”，方是妙文吧。至于我这篇不妙文，既难追雅，又难谐俗，也就只好“雅俗不共赏”了。

小题1:文章认为应怎样区分雅与俗？结尾处画线的句子隐含了作者怎样的文章观？（6分）

小题2:第⑧段的议论有什么特色？请简要概括。（6分）

小题3:请简要说明全文的论述思路。（6分） 

Roughly speaking, teachers in traditional education may feel that students are too young to know much about the world, and have to be told what to do most of the time. By contrast, open education offers teachers quite different feelings. Students are expected to be responsible for their own education—to discover subjects by themselves instead of being made to study them. This way of teaching allows the students to grow independently and to develop their own interests in many subjects. Some students who do badly in a traditional classroom will be happier in an open classroom and enjoy learning. They will not have to worry about grades or rules at all.

However, many students won’t do well in an open classroom. For these students, they will do little in school if there are too few rules. They will not make good use of open education, which is so different from traditional class, because they may have a problem getting used to making so many choices on their own. For them it is important to have some rules to direct them. They may worry about the rules even when there are no rules. In addition to that, some traditional teachers do not believe in open education and do not like it either.

Since both of some good points and bad points of the open education have been explained clearly, you may have your own opinion on the issue. Personally, I think that the concept of open education is good only in theory. In actual fact, it may not work very well in a real class or school. I believe, most students, but of course not all students, need some structure in their classes. They may want and need to have rules.

In some cases, they must be made to study some subjects. Many students are pleased to find subjects they have to study interesting. They would not study those subjects if they did not have to.

小题1:Open education allows the students to_________________.

A．grow as the educated

B．be responsible for their life

C．discover subjects outside class

D．develop their own interests小题2:Open education may be a good idea for the students who __________.

A．worry about grades and rules

B．aren’t used to making choices

C．do well in a traditional classroom

D．enjoy having some rules in class小题3:Some students will do little in an open classroom because___________.

A．there are too many rules

B．they don’t like activities

C．there are too few rules

D．they worry about the rules小题4:Which of the following best summarizes the passage?

A．Open education is a really complex idea.

B．Open education is better than traditional education.

C．Traditional teachers don’t believe in open education.

D．The writer thinks open education is practical.

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