问题 综合

流域是一个相对独立的自然地理系统,它以水系为纽带,将系统内各自然地理要素连结成一个不可分割的整体。在流域的开发过程中,资源利用发生了深刻变化,流域状况受到人类活动的强烈干扰。读河西走廊石羊河流域的相关图示材料,分析回答问题。

(1)简要评价石羊河流域经济发展的不利自然条件。(2分)

(2)简析气候变化对该流域春小麦、玉米生产的影响。(2分)

(3)民勤某中学地理兴趣小组为探究提高西瓜产量和质量的途径,分两组进行实验种植:A组直接在田里种植,B组在田里覆盖一层砾石后种植,即“压砂技术”。实验结果发现B组种植的西瓜产量和质量均高于A组。试从砾石覆盖对瓜田水、热、土条件的改变方面,帮助他们解释其中的原因。(3分)

(4)为了拯救民勤绿洲,民勤县政府制定并实施了“关闭部分机井、压缩农田面积、推广滴

灌技术、进行生态移民”的四大措施。简析实施这四大措施的主要目的。(3分)

答案

(1)①气候干旱、水资源缺乏(1分) ②生态环境脆弱(1分)

(2)①(喜凉、耐寒、水分要求较高的)春小麦种植面积逐年下降,种植范围缩小(1分)

②(喜温、耐旱)玉米种植面积逐年增加,种植范围扩展(1分)

(3)①砾石层可以有效的减少水分的蒸发(1分) ②砾石可以增大土壤的日温差,利于养分积累(1分)

③砾石可以减少风沙吹袭造成的土壤肥力流失(1分)

(4)①减少人口对生态环境的压力(1分) ②减少对地下水的开采和农业灌溉用水量(1分) ③减少对水资源的浪费,提高利用率

题目分析:

(1)本地区干旱指数较高,所以气候干旱,水资源缺乏。该流域地表植被较少,所以生态环境脆弱,一旦损害,很难恢复。

(2)该流域气候的变化趋势是气温逐渐升高,干旱程度越来越高,所以春小麦的种植面积减少,种植范围缩小。因为它是喜凉、耐寒、水分要求较高的作物。玉米种植面积逐年增加,种植范围扩展,因为它是喜温、耐旱的作物。

(3)本题主要从砾石覆盖对瓜田水、热、土条件的改变三个方面来答题。砾石层可以的有效保护地下水,减少水分的蒸发。砾石层升温快,降温也快,可以增大土壤的日温差,利于养分积累。砾石可以减缓风速,从而减少风沙吹袭造成的土壤肥力流失。

(4)关闭部分机井减少对地下水的开采、压缩农田面积减少农业灌溉用水量、推广滴灌技术减少对水资源的浪费,提高资源利用率、进行生态移民,减少人口对生态环境的压力。

选择题

2008年4月9日,中宣部部长刘云山在建设社会主义核心价值体系研讨会上发表讲话指出,知识分子特别是各界知名人士是建设社会主义先进文化的重要力量,应当充分发挥自身优势,不断推动社会主义文化大发展、大繁荣。据此回答74~78题。

74.建设社会主义先进文化的根本要求和根本保证是

A.坚持社会主义精神文明建设 B.坚持先进生产力的发展要求

C.坚持先进文化的前进方向 D.坚持科学理论为指导

75.差异是社会存在的客观现实,多样是社会发展的必然趋势。思想文化越是多样化,越是需要有主心骨。我国文化建设的主心骨就是

A.坚持马克思主义的指导地位 B. 坚持百花齐放,百家争鸣的方针

C.继承中 * * 的传统文化 D. 借鉴西方文化的优秀内容

76.下列文化多样性与坚持先进文化的前进方向关系的表述不正确的是:

A.社会主义核心价值体系与文化多样性统一于社会主义文化建设中

B.建设社会主义核心价值体系有利于坚持先进文化的前进方向

C.尊重文化多样性不能违背社会主义核心价值体系

D.把握先进文化的前进方向关键在于尊重文化多样性

77.发展社会主义先进文化的目标是

A.培育“四有”公民 B.培育和弘扬民族精神

C.倡导公民基本道德规范 D.大力弘扬传统文化

78.建设中国当代先进文化,应当

①以马克思主义为指导 ②以培育“四有”公民为目标 ③以“三个面向”和民族性科学性大众性为时代品格 ④以发展教育、科学、文化事业为目的 ⑤以社会主义为核心要求

A.①②③④ B.①②③⑤ C.②③④⑤ D.①②③④⑤

单项选择题

Text 1

Mary Eberstadt writes in Home-Alone America that growing obesity, the high incidence of sexually transmitted disease among teenagers and an overdependence on drugs such as Ritalin for attention deficit disorder are often the fault of parents who "outsource" their responsibilities.

"We tend to think that the problems with juveniles are located at the bottom end of the social spectrum, but latchkey children are more common among the affluent," said Eberstadt, a mother of four who is a conservative writer and research fellow at Stanford University’s Hoover Institution.

According to the most recent figures from the US Census Bureau, 41% of children aged 12 to 14 regularly look after themselves at the end of the school day. The figures rise with prosperity. For children aged 5 to 14, "self-care increases from 11% of children in poverty to 22% of those with family incomes at least double the poverty line."

Eberstadt’s book is dividing sociologists, critics and partisans in the "mommy wars" between stay-at-home and working parents. A child clings to the ankles of his smartly dressed mother to stop her leaving for work on the front of the book; he does the same to his father on the back.

P. J. O’Rourke, the conservative commentator and satirist, supports Eberstadt’s thesis. "If you don’t think (her) arguments have merit, try treating your dog the way America treats its kids," he said.

"Give the puppy her own set of house keys and put her in front of the television instead of taking her for a walk. Let her eat anything she wants and house train herself. Send her to another master for visitation at the weekends. And when she comes into heat, turn her loose in the pound."

James Q. Wilson, author of The Marriage Problem: How Our Culture Has Weakened Families is one of the intellectual forces behind zero tolerance policing. He praised the book’s "great, unarguable theme that parental care is of decisive importance in shaping the character of our children".

Feminist critics, in contrast, accuse Eberstadt of Taliban-style thinking. The Washington Post attacked her "seductive" but "nasty" opinions and lack of "interest in how real people live or think about their lives".

Eberstadt insists that she is not ordering women back to the home. "The bottom line is a lot more nuanced," she said. "It doesn’t have to be ’you’ there after school, but there are not enough protective, supporting, loving adults around."

Neighbourhoods, she added, "are so emptied of adult presence that even the richest kids just go home, throw the deadbolt and get no exercise more strenuous than walking from the video game to the refrigerator." The result of being home alone is not just snacking and obesity but casual sex, leading to an explosion in venereal diseases that can lead to infertility and cervical cancer, Eberstadt said.

Mary Eberstadt would mostly agree()

A.the problems with juveniles are located at the bottem end of the social spectrum.

B.women shall not go out to work but stay at home.

C.children in rich families are lack of exercises.

D.leaving children alone will lead to many diseases.