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问题 选择题

农村及城市生活污水中含磷、家用洗涤剂（含有磷酸钠）就是污水中磷的一个重要来源，处理污水时要不要除去磷，有以下几种意见，你认为正确的是（　　）

A．磷对人无害，除去与否无关紧要

B．磷是生物的营养元素，不必除去

C．含磷的污水可作磷肥，不必处理

D．含磷的污水排放到自然水中引起藻类增殖，使水变质，必须除去

答案

A、磷过多对人有毒害，且水中含量过高时会造成水体富营养化，致使水生藻类大量繁殖，由于水中缺氧造成水中生物大量死亡，遗体腐败，水质恶化，所以错误．
B、磷虽然是生物的营养元素，但摄入过多有害，且水中含量过高时会造成水体富营养化，致使水生藻类大量繁殖，由于水中缺氧造成水中生物大量死亡，遗体腐败，水质恶化，所以错误．
C、含磷的污水虽然是很好的肥料，水中含量过高时会造成水体富营养化，致使水生藻类大量繁殖，由于水中缺氧造成水中生物大量死亡，遗体腐败，水质恶化，所以错误．
D、水中含量过高时会造成水体富营养化，致使水生藻类大量繁殖，由于水中缺氧造成水中生物大量死亡，遗体腐败，水质恶化，必须除去，所以正确．

故选D．

阅读理解与欣赏

阅读下面的文字，完成下面题目

丢草绳

陈传荣

①小时候，每年的夏天，体弱多病的我，总要生上那么几天的疟疾。多少年来，我对夏天总怀有一种畏惧的情结。患了疟疾，多半是听之任之，家里没钱给我找医生。

②有一年夏天，我病得特别厉害，时间又拖得特别长，母亲心急如焚，人明显地憔悴了，眼睛也红红的，大约是哭过了。

③后来，母亲不知在何处打听到了一个“好办法”，说是让生疟疾的人，找一根草绳系在腰间，过上一夜后，第二天早上，将那根草绳解下丢在路口，如果有人从草绳旁经过，那么，这人就会带走草绳上的疟疾，而原来生疟疾的人也就会好了。

④得到这样的“好办法”，母亲并没有露出喜色，反而更加唉声叹气了：都是乡里乡亲的，让谁带去也不忍心呐！但看到我被疾病折磨得奄奄一息的样子，母亲终究还是违着良心按那方法做了。

⑤记得那天晚上，母亲一边给我系着草绳，一边还心事重重地说：“你这个病秧子，咋就这般累人！”我知道，母亲之所以呵斥我，其实是因为她的心里很矛盾。

⑥一个不眠之夜过后。天色还没有完全亮，母亲就将我腰间的那根草绳解下，然后，趁着夜色，匆匆地丢在了一条并不很远的乡间小路上。丢下草绳后母亲便逃似的跑了回来。

⑦到家后母亲还喘着粗气。过了好一会儿，母亲才定下神来。她轻轻地安抚着我：“没事了，妈已为你丢了草绳……”

⑧然而，非常不争气的是，虽然母亲为我丢了草绳，但我的病却并没有因此好转，反倒烧得越来越厉害了。这不由得使母亲更加失望和惶恐起来。

⑨一天，在我迷迷糊糊发着烧，无力地躺在床上的时候，邻居家有位叫“三姨”的来看望我。坐在床沿，三姨用手摸了摸我滚烫的额头，心疼地说：“这伢子，真是遭罪！”母亲也就愈加悲叹了，母亲说：“在往日，生上几天也就好了，这趟都拖了这么多天，还没有见好的样子，真不晓得是怎么弄的！”然后，母亲就开始抹起泪来。

⑩三姨的眼也红红的，她没提看病的事，她知道母亲没钱。“你给他丢过草绳了吗？”过了一会儿，三姨问。母亲显得很不好意思，说：“丢过了，但是没用，你看这伢子还是这样病着。”

三姨问母亲将绳子丢到了什么地方。母亲告诉了她。三姨拍了一下腿说：“你怎么将绳子丢在那呢，那条小路根本就没人走的，没人走，怎么能带走伢子的病呢？”母亲这才恍然大悟起来。三姨没有再说什么，她与母亲都望望躺着的我。

三姨从我家离开的时候已近黄昏，落日的余晖将乡村照得金黄金黄。母亲将三姨送出屋，说了些客套话，然后，返身回到屋里为我敷了湿毛巾，倒了一杯开水，出去了。

母亲是打算去菜园掐一些菜回来做饭的，但很偶然的一瞥，母亲怔住了。母亲发现，刚刚由我家走出去的三姨，正快步朝着母亲丢草绳的那条小路上走去……

提着空空的竹篮，呆呆地立在菜园里，母亲的脸上淌出了许多泪花。

后来，母亲就常常对我唠叨起这件“丢草绳”的事情。我也常常想起那个令人难忘的夏天，想起那位并不是我嫡亲的三姨。                  （选自《文汇报》2007年10月8日，有删节）

小题1:

怎样理解“难忘”在文中的含义？

答：                                                                               

小题2:

“三姨从我家离开的时候已近黄昏，落日的余晖将乡村照得金黄金黄”这一景物描写，在文中起到了怎样的作用？

答：                                                                               

小题3:

作者刻画“三姨”这个人物形象，有何用意？（★）

答：                                                                               

小题4:

文中说“母亲这才恍然大悟起来”，是因为“母亲”不知道“那条小路根本就没人走”吗？请结合全文作具体探究。

答：                                                                               
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单项选择题

Oxford and Cambridge University Boat Clubs have both taken the opportunity to travel to Spain this month to train in less testing weather conditions than those which have, quite literally, already blown around the UK in January of 2007.
Each group of athletes has been focused on training to the maximum, working on technique and molding themselves into two potential fighting units per Club for the 2007 Boat Race, sponsored by Xchanging. One set will be in the Blue Boat for each club and one set will race as reserves in Isis, for Oxford, and Goldie, for Cambridge.
In these modern times, the Head Coach for each club has a huge input on selection even though the crew is still named by the President. Just twenty years ago the balance was not quite the same.
The year 1987 will always be remembered in the history of this great Race as the year of the "mutiny" at Oxford. It is a tale which has since been retold and reworked in both a book and a movie.
This was the season for which mature Scottish student, Donald Macdonald, was elected President, having all ready won a Blue in 1986. Macdonald re-appointed Daniel Topolski (now a renowned rowing journalist and broadcaster)as Chief Coach.
Part of the 1986/87 squad at Oxford included American Chris Clark, now a coach at an American University, and four fellow US internationals.
Allegedly, a split appeared in the squad between the American quintet, all experienced and leading oarsmen, and those rowers closest to Macdonald. The Scot’s group were happy to follow Topolski’s regime whilst the others were not so sure.
Following a contentious seat racing trial in January of 1987, Topolski decided to move Clark to the bow-side of the beat. Clark disagreed. Topolski held firm. As a result Clark and his" group" within the squad decided not to row and sought a takeover.
The squabble was played out extensively in the UK national media and caught the public imagination. Macdonald sought support from the college captains and eventually won a vote of confidence by 28 votes to 11.
Without the Americans, the Oxford crew was immediately considered a lost cause. Cambridge were overwhelming favorites to win.
As it turned out, though, this was a Race which would prove why sport, and particularly The Boat Race, can be so fascinating.

It can be inferred that "Isis" and "Goldie" are the names of two ______.

A．places

B．teams

C．races

D．clubs
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