题目内容

【题目】下图为“2013春节期间深圳某大街‘空城’一角示意图”。读下图,完成下列各题。

1造成深圳某大街2013年春节期间“空城现象”的最主要原因是( )

A.逆城市化加速B.务工人员返乡

C.人口老龄化加剧D.人口迁移增多

2目前某些国家市区出现了劳动力过剩、交通拥挤、住房紧张、环境恶化等问题,由此推测该国处于城市化进程的( )

A.初级阶段B.加速阶段C.后期阶段D.成熟阶段

【答案】

1B

2B

【解析】

1深圳经济发达,外来人口多,务工人员春节回家过年,导致“空城”现象发生,故B正确。

2劳动力过剩、交通拥挤、住房紧张、环境恶化等问题出现在城市化进程的加速阶段;初级阶段城市化问题不明显,后期阶段和成熟阶段城市化问题基本得到缓解。故B正确,ACD错误。

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【题目】

1. Exercise

Studies show that 30minutes of mild exercise a day will increase your life span. This doesn't mean you have to run three miles or start jumping. Simple activities such as walking, gardening or taking exercise classes will work.

2. Enjoy people

Contacts with family and friends help fight life-sapping depression and stress. Studies show that people socialize regularly live longer than loners. Interact daily with family members and friends. If you are isolated, make a point of joining social clubs or church groups so you can laugh and share life's joys.

3. Stay mentally active

This is very important-use it or lose it!People who allow their mental faculties to decline run the risk of shortening their lives through falls and other injuries, and not being able to take care of themselves. Read the newspaper, visit the public library, balance your checkbook without a calculator, and exercise your brain by doing crossword puzzle.

4. Diet

The key words are"high-fiber, low-fat". Cut back on red meat, salt, white flour, white sugar, alcohol and coffee. Start eating a balanced diet including lots of fruit, grains, raw vegetables and nuts.

5. Positive attitude

By approaching life with a positive outlook you increase your chances of living longer. Stay optimistic-always search for the silver lining. Studies show people who see life as an enjoyable challenge, rather than a constant trial, cope better and prolong their life spans.

6. medication mix

As we age, we are more likely to take medications. Sometimes this leads to over-medication, which can be disabling and even deadly. Ask your doctor if the drugs you take are really necessary. Make sure there is no danger of a bad drug interaction from your medication. Used correctly, medicines can help you live longer and more comfortably.

7. Volunteer

Helping others increases your self-esteem and makes you feel like a valuable contributor.

1Which of the following does NOT increase your life span___

A.Staying happy about lifeB.Exercising as much as possible

C.Exercising your brain frequentlyD.Enjoying your social life

2People who do not stay mentally active are more likely to___.

A.become ignorantB.lose their minds

C.shorten their livesD.become slow in movement

3Which of the following is correct about medication___

A.Appropriate medication is necessary.

B.Medication is always helpful to you.

C.Doctors suggest taking expensive medicines.

D.Drugs are unnecessary because of side-effects.

【题目】阅读图文材料,完成下列要求。

纳特龙湖(见图)是一个主要依靠周边河流及火山温泉补给的内流湖,该湖位于肯尼亚和坦桑尼亚交界处,湖面长约57公里,宽22公里。雨季时,湖面面积可达900平方公里,旱季时,湖面有60%—70%的面积干涸,成为一个个互不相连的水洼。由于含有特殊的火山熔岩成分,湖水有高盐碱、高毒牲的特点,而高盐碱湖水是大量藻类理想的生长环境。盐湖周边高度盐碱化的土壤及湖面上挥发的有毒气体不适合大多数生物存活,但小火烈鸟却适应了这样严酷的环境并得以在这里生存繁衍。

小火烈鸟主要栖息在盐水湖泊、沼泽等浅水地带,并以水中藻类为食。纳特龙湖被誉为“小火烈鸟的摇篮”,常年有100万到200万只小火烈鸟栖息。每年几乎所有的小火烈鸟分批迁徙到纳特龙湖并在盐湖中部露出水面的高地建巢繁殖,使这里成为小火烈鸟唯一的繁殖地。2018年,“厄尔尼诺”现象和强台风带来14年来最大的降雨量,造成十几年最大的洪灾,纳特龙湖中的小火烈鸟繁殖受到灾难性冲击,面对强碱性湖水的侵袭,没有防护能力的鸟蛋无法孵化。

(1)运用水循环原理,说明纳特龙湖湖水盐碱度高的主要原因。

(2)分析纳特龙湖成为“小火烈鸟摇篮”的主要原因。

(3)推断纳特龙湖小火烈鸟繁衍面临的潜在自然威胁。

(4)纳特龙湖中富集丰富的晶碱石,可以用于生产纯碱和工业用盐,同时还可以为饮料厂提供苏打粉。有人反对在纳特龙湖周边地区建立大量的化工厂,请明理由。

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