发动机起动时，转速变化大，空气流量不稳定，进气量传感器输出的流量信号就不稳定，点火提

以下不是膳食纤维的功能的是（）。

A.防止便秘

B.降低胆固醇

C.防肠癌

D.刺激消化液分泌

E.降低血栓形式

行政沟通是指在行政管理活动中，行政机构之间或行政机构与有关方面之间的信息上的传递交流与联系。下列不属于行政沟通的一项是( )。

A．政府机构彼此的公文往来

B．省编制办下达了本年度的人员、财政编制给各地市

C．在县公安局打字的小张写信向县委机关打字员求爱

D．县政府召开各部门领导开会，安排下半年的党风廉政建设

阅读下面选文，按要求回答文后各题。

　　①父亲早早去世，为了生计，母亲在家乡摆了个水果摊，每天天没亮就要起来张罗。到了七点左右，一切准备妥当了，于是用三轮的脚踏车，载着顺路的他和一车水果，在晨曦中一路奋进。

　　②母亲的背驼得很严重。到了冬天，在这个北方的小城里，北风裹着雪花，一路肆虐。每当这个时候，母亲总是用力地挺直了背。躲在母亲背后的他，恍然发现母亲的驼背直了不少。

　　③到了学校，他欢呼着跳下车，把这个惊喜发现告诉了母亲。他还沾沾自喜地叮嘱母亲，说不定蹬脚踏车有助于纠正驼背呢。母亲笑了笑，不以为意。可是懵懂的他却天真地认为，如果母亲能直起背来，自己就不会被同学叫做“小罗锅”了。

　　④母亲蹬脚踏车挺直的脊背，让他看到了希望。可是日复一日，他失望地发现，母亲蹬脚踏车时，脊背是直的，可一下车，却又成了驼背。于是，同学们的嘲笑始终伴随着他。

　　⑤后来，他考上了大学，毕业后，留在了城市里。没过了几年，他娶了个漂亮的妻子，也增添了一个可爱的小生命。母亲一直想过来看看孙女，可是他碍于面子，始终说自己忙，不断推脱。

　　⑥直到有一天，他骑着自行车，送四岁的女儿去幼儿园。那天的北风格外地大，刮在脸上竞有些生疼。女儿惊叫了几声，他于是下意识地挺直脊背，挡住迎面而来的寒风。风像刀子一样，在身上刮过，他却始终牵挂着后座上的女儿。

　　⑦那一刻，他突然想起了老家的母亲。他也终于明白，那些风雨交加的早上，母亲奋力地挺直了一直被他嫌弃的驼背，为后座的他挡住了刺骨的风雪。母亲的背，因为爱而挺直。可他不知道的是，每次把他送到学校，回到水果摊后，母亲的背总会疼上大半天。这样的戏，在他年少时光中，日复一日的上演。

　　⑧他的心里，突然涌进了阵阵酸楚。母亲的背是驼的，爱却很直。每个子女的身前，都有一堵挡风遮雨的挺直脊背，那是一堵爱的厚墙。（选自《知识窗》2009年第1期）

1．选文第④段中说“母亲蹬脚踏车挺直的脊背，让他看到了希望”，根据你对选文内容的理解，你认为他的“希望”是什么？

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2．“母亲一直想过来看看孙女”，“可是他碍于面子，始终说自己忙，不断推脱”。结合选文，请你说说他“不断推脱”的真正原因是什么？

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3．选文第⑦段中说“这样的戏，在他年少时光中，日复一日的上演”。在文中“这样的戏”具体指什么？

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4．阅读选文后，你会为其精美的文题所折服，联系全文，说说选文标题好在哪里？

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某上市公司预计于2009年12月1日发行分离交易的可转换公司债券，根据相关要求，发行后累计公司债券余额不得高于最近1期末公司净资产额的______。

A．20%
B．30%
C．40%
D．50%

(46) History tells us that in ancient Babylon, the cradle of our civilization, the people tried to build a tower that would reach to heaven. But the tower became the tower of Babel, according to the Old Testament, when the people were suddenly caused to speak different languages. In modern New York City, a new tower, that of the United Nations Building, thrusts its shining mass skyward. (47) But the realization of the UN’s aspirations—and with it the hopes of the peoples of the world—is threatened by our contemporary Babel: about three thousand different languages are spoken throughout the world today, without counting the various dialects that confound communication between peoples of the same land.

In China, for example, hundreds of different dialects are spoken; people of some villages have trouble passing the time of day with the inhabitants of the next town. In the new African state of Ghana, five million people speak fifty different dialects. In India more than one hundred languages are spoken, of which only fourteen are recognized as official. To add to the confusion, as the old established empires are broken up and new states are formed, new official tongues spring up at an increasing rate.

In a world made smaller by jet travel, man is still isolated from many of his neighbors by the Babel barrier of multiplying languages. Communication is blocked daily in scores of ways. Travelers find it difficult to know the peoples of other nations. Scientists are often unable to read and benefit from the work being carried on by men of science in other countries. (48) The aims of international trade, of world accord, of meetings between nations, are blocked at every turn; the work of scholars, technologists, and humanists is handicapped. Even in the shining new tower of the United Nations in New York, speeches and discussions have to be translated and printed in the five official UN language—English, French, Spanish, Russian and Chinese. Confusion, delay, suspicion, and hard feelings are the products of the diplomatic Babel.

The chances for world unity are lessened if, in the literal sense of the phrase, we do not speak the same language. (49) We stand in dire need of a common tongue, a language that would cross national barriers, one simple enough to be universally learned by travelers, businessmen, government representatives, scholars, and even by children at school.

Of course, this isn’t a new idea. Just as everyone is against sin, so everyone is for a common language that would further communication between nations. (50) What with one thing and another—our natural state of drift as human beings, our rivalries, resentments, and jealousies as nations—we have up until now failed to take any action. I propose that we stop just talking about it, as Mark Twain said of the weather, and do something about it. We must make the concerted, massive effort it takes to reach agreement on the adoption of a single, common auxiliary tongue.

(50) What with one thing and another—our natural state of drift as human beings, our rivalries, resentments, and jealousies as nations—we have up until now failed to take any action.