“西电东送”三大通道中目前以输送火电为主的通道是 A．北通道 B．中通道 C．南

(5分)下图是某森林生态系统的食物网示意图，据图回答问题：

（1）该生态系统中，生产者是           ，兔、狐等属于            。

（2）该食物网中共有        条食物链。

（3）该食物网中数量最少的生物是__   ____。

(4）如果受到DDT污染，体内DDT含量最高的生物是         和           。

（5）写出其中4条食物链：

_______________________________                                                   

小样本情况下，总体服从正态分布，总体方差已知，总体均值在置信水平（1-α）下的置信区间为（）

房屋采暖设备中，膨胀水箱是用来容纳受热后管内的膨胀水和排出水中气体的，它一般放置在( )。

A．给水总立管的顶部

B．给水总立管的底部

C．回水总立管的顶部

D．回水总立管的底部

以下不属于礼貌服务内容的是( )。

A．银行业从业人员的业务活动以客户为中心，专业的态度、得体的行为举止、为客户提供礼貌周到的服务是从业人员履行职责的基本要求

B．一般银行业从业人员所在机构对员工的着装、言行都有较为明确的要求，银行业从业人员应该熟知这些要求，自觉践行

C．银行业从业人员应当以大方得体的行为举止为客户提供优质服务，并在业务处理过程中，满足客户的合理要求，对于明显不合理的要求，也应耐心说明情况，获得客户的理解

D．对残障或语言存在障碍的客户，银行业从业人员应当尽可能为其提供便利

It seems incredible to me that Latin is not taught in schools as a matter of course, especially in a country that is forever lamenting its own (undeniable) mediocrity when it comes to speaking foreign languages. As a 13-year-old, I hardly approached my own Latin lessons with anything resembling enthusiasm—I might have been keener if Aeneas went to the shops occasionally—but I am terrifically grateful I had them, all the same.
The benefits are many. Having a basic grounding in Latin makes learning Romance languages a doodle(轻而易举的事): the fact that I speak English plus three others has less to do with any genetic predisposition—I was hopeless at learning Russian—than with an understanding of the root and provenance of Latin-derived words.
It would be impossible to have a smattering of Latin and find oneself stuck in Italy, provided one managed to persuade the speaker to slow down a bit. And the reason I can (arguably) just about string a sentence together in English—which isn’t my first language—has a great deal to do with understanding, through Latin, the way sentences and grammar work.
Latin also has its own pleasing internal logic: you follow the rules and you get the answer. And I really believe that if you know Latin, you half-speak French already. The British used not to be appalling at languages: my theory is that they only became so during the past century, when Latin stopped being widely taught.
Detractors(恶意批评者) might point out that there is little use in learning a dead language. But Latin is not dead: it’s everywhere. It makes the kind of people who never use two short words when six big ones will do intelligible. It demystifies jargon and legalese. It helps with crosswords. It even forces those of us who are pathologically illogical to think logically every once in a while: I remember the pleasure I felt at school, during Latin translation, when I realized I could create order and sense out of apparent chaos.
Really, Latin’s useful applications are manifold. Watching Who Wants To Be A Millionaire a few weeks ago, I noticed that the question which felled the contestant would almost certainly not have stumped him had he had some Latin. Of all the possible answers, only one had a Latin root that echoed the question. From Cicero to Chris Tarrant in a few easy steps, you can’t say more modem or less dusty than that.

The word "a smattering" underlined in Paragraph 3 is closest in meaning to ______.

A．a little knowledge

B．a lot

C．plenty of

D．little knowledge