问题 综合

(14分)读图,(其中图乙为图甲中虚线方框区域)完成下列问题。

(1)图甲中E河流域的聚落主要分布在什么地貌类型上,并解释该地貌的形成过程。(6分)

(2)试比较A、B两湖的矿化度(水的矿化度通常以1升水中含有各种盐分的总克数来表示)高低;并用水循环原理说明原因。(4分)

(3)为解决A湖生态问题,1970年修建了调水渠。根据上述材料,说明该调水方案的有利条件。(4分)

答案

小题1:冲积扇、洪积扇(2分)  山区河流流出山口时,地势趋于平坦(2分),水流平缓,河流携带的泥沙沉积而成(2分)

小题2:A矿化度较B湖高(1分)。

理由:该区域深居内陆,气候干旱,蒸发旺盛(1分)。B湖面积小,水分收入为F河淡水的注入(1分),水分支出为蒸发和径流流入进入A湖(1分),矿化度较低。(或者,A湖面积大,水分收入主要从B湖流入的湖水(1分),水分支出绝大部分为蒸发(1分),故矿化度较高。)

小题3:E河流域面积较大且降水量较多,流量大(2分);(水渠北端高程491米,湖面平均高程480米)E河水位高于A湖水面,水可自流(2分)。

题目分析:

小题1:根据经纬度位置判断,该区域位于我国西北的准噶尔盆地,为内陆盆地,受地形和水源因素影响,聚落主要分布于山麓冲积扇地区。该地貌的形成主要从流水沉积分析。

小题2:该地区位于干旱地区,湖泊的水源主要受河流水注入,且蒸发旺盛,根据F河流的流向,判断F河流入B湖泊,且B湖泊面积小,故B湖泊盐度较低,而A湖泊水面大,受河流水补给小,故盐度较高。

小题3:有利影响主要从河流补给湖泊水,地势高低等因素分析。

点评:本题是区域地理的典型性试题,解题的关键是能抓住图示的经纬度位置、地形差异、河流流向等内容分析即可。

阅读理解

About twenty of us had been fortunate enough to receive invitations to a film-studio(影棚)to take part in a crowd-scene. Although our "act" would last only for a short time, we could see quite a number of interesting things.

We all stood at the far end of the studio as workmen prepared the scene, setting up trees at the edge of a winding path. Very soon, bright lights were turned on and the big movie-camera was wheeled into position. The director shouted something to the camera operator and then went to speak to the two famous actors nearby. Since it was hot in the studio, it came as a surprise to us to see one of the actors put on a heavy overcoat and start walking along the path. A big fan began blowing tiny white feathers down on him, and soon the trees were covered in "snow". Two more fans were turned on, and a "strong wind" blew through the trees. The picture looked so real that it made us feel cold.

The next scene was a complete contrast (对比). The way it was filmed was quite unusual. Pictures in front taken on an island in the Pacific were shown on a glass screen (幕). An actor and actress stood of the scene so that they looked as if they were at the water’s edge on an island. By a simple trick like this, palm trees, sandy beaches, and blue, clear skies had been brought into the studio!

Since it was our turn next, we were left wondering what scene would be prepared for us. For a full three minutes in our lives we would be experiencing the excitement of being film "stars"!

小题1:Who is the author?

A.A cameraman.

B.A film director.

C.A crowd-scene actor.

D.A workman for scene setting.小题2:What made the author feel cold?

A.The heavy snowfall.

B.The man-made scene.

C.The low temperature.

D.The film being shown.小题3:What would happen in the "three minutes" mentioned in the last paragraph?

A.A new scene would be filmed.

B.More stars would act in the film.

C.The author would leave the studio.

D.The next scene would be prepared.

单项选择题