问题 综合

读某区域某时海平面等压线分布示意图,虚线为晨昏线。回答下列问题。(13分)

(1)①地位于②地的    方向,①地距③地约               千米。(2分)

(2)此时,北京时间为                ;新一天的范围是              。(2分)

(3)此日,地球公转速度较  (快或慢),北半球昼夜长短的分布规律是     。(2分)

(4)此时,①地的盛行风向为          ;②地的天气特点是          。(2分)

(5)比较此季节②地和③地的气温差异并分析原因。(3分)

(6)近年来,有关③海域的国际竞争愈演愈烈,简述国家间产生竞争的主要原因。(2分)

答案

(13分)

(1)东南(1分)   3330千米(1分) 

(2)3时(1分)  东经900向东到1800(1分)

(3)快(1分)    北半球昼短夜长,纬度越高昼越短,北极地区出现极夜现象(1分)

(4)西北风(1分) 寒冷晴朗(1分)

(5)②地气温比③地气温低,(1分)

原因是深居内陆,受海陆热力差异影响,冬季降温幅度大(1分)  地势高(1分)

(6)北冰洋蕴藏着丰富的自然资源,特别是石油资源;

对北冰洋的领土竞争可以拓展生存的空间,缓解陆地环境的压力;

北冰洋是联系三大洲的捷径,战略地位突出;(答对2点得2分)

题目分析:

第(1)题,本题是根据经纬度判断方位。由海陆轮廓可知,该地为北半球,自转方向为逆时针。故图示②地离北极点较①地近,从②地看①地与地球自转方向一致,故为向东。①地与③地的距离,考查的是纬度相差 1 度,距离相差 111 千米。

第(2)题,根据图中信息可知,陆地是高压,说明是冬季,北极上空是极夜现象,所以90ºE是0时,则北京时间的区时即120ºE的地方时为3时。新的一天从0时经线到180º经线,即为从东经900向东到1800

第(3)题,由亚欧大陆上出现高压,可知季节为冬季,地球处于近日点附近,公转速度较快,北极点出现极夜现象。

第(4)题,此时是北半球的冬季。根据经纬度和海陆位置分析风向及天气特征。①地的风向可根据等压线变化规律得出,②地受高压脊影响,出现寒冷晴朗天气。

第(5)题,②地和③地的气温差异。原因从海陆位置、地形等方面分析。

第(6)题,北冰洋的重要性从资源、领土、地理位置等方面分析。

点评:本题难度一般,基础性强。解题需要掌握以下几点:①掌握经纬网图上,方位判断的基本方法:利用与极点的距离判断南北方向,与自转方向的关系判断东西方向;②利用经线计算球面上的距离;③掌握地球公转速度的变化规律;④掌握世界区域的气候类型和气候特征;⑤掌握影响气温的主要因素等内容。

阅读理解

The smell of fresh air is becoming something of a distant memory, thanks to our increasing use of fragrance (香气). From air fresheners to scented (有香味的) candles, we live in a world of scent.

Recent figures show seven in ten people use air fresheners or scented candles to keep our homes smelling sweet. Yet recent records suggest that perfumed products could affect our health, causing problems including allergies (过敏), headaches and asthma (哮喘) .

One leading expert believes nearly a third of people suffer health effects from being exposed to scents. A major problem is so-called “contact” allergy—where perfumes and scented products cause eczema (湿疹) when they come into contact with the skin. About one in 20 is thought to be affected by fragrance allergy.

“Often it may not be immediately obvious that you have developed a fragrance allergy,” says Dr. Baron. “You don’t react immediately. Gradually, as you are exposed more and more, the body increases its reaction, until it becomes noticeable to you.”

People with pre-existing eczema are particularly vulnerable (易受影响). “The eczema worsens in areas in contact with perfumes,” says Dr. Baron. “But even those without allergies can be at risk of fragrance allergy.” You can become suddenly allergic to perfumes and personal care products that you have been using for years. “Even if you know which fragrance causes a problem, it can be difficult to avoid, as most personal care products –soap, shampoo, sun cream and washing powder—contain fragrances,” says Dr. Baron.

And strong scents can also cause headaches. Fragrances activate the nose’s nerve cells, stimulating the nerve system associated with head pain. To minimize risk, sufferers are advised to minimize the contact.

“Fragrance suggest cleanliness – yet people are smelling a potentially dangerous chemical mixture,” says Anne Steinemann, professor of the University of Washington. “We often use them to mask one problem – as with air fresheners – but create a greater one – adding poisonous chemicals to the air.”

小题1:What is the text mainly about?

A.The world trend of using fragrance.

B.The benefits of using non-fragranced products.

C.The health problems caused by fragrance

D.The ways of removing allergy.小题2:According to Dr. Baron,            .

A.our bodies have an immediate reaction to fragrance.

B.seven in ten have suffered fragrance allergy.

C.fragrance can affect people who don’t have allergy

D.people can avoid contacting with fragrance easily小题3:Which of the following questions does the text NOT answer?

A.Which products contain fragrance?

B.What’s the influence of fragrance in the air?

C.What are the air fresheners made up of?

D.How are headaches caused by fragrance?小题4:The following paragraph might discuss            .

A.the asthma caused by strong scents.

B.people’s efforts to protect fresh air.

C.the methods of curing eczema

D.the bad effects of air fresheners.

单项选择题