英国地理考试真题长这样【A1-0412 模考真题解析】

题图摄于重庆曾家岩望江露台

2017.04.18 - 2017.05.10

(9696 Geography, 3 hour)

⏳Before the A1 exam, you have 22 days to go.

今天距离地理A1 考试还有：22 天

哟吼哟吼～

付出努力和思考的人，应该都得到了自己相对比较满意的分数吧？

如果你并没有花时间，上课也没有认真听、同思考，那对不起咯。

今天更新Section A 前三题，我尝试用ABC解读法，先分析，然后给出我的参考答案，最后给一段相关的文字阅读材料：

Q1-Q6

(choose 5Q from 6Q, each with 10 marks)

Q1 (selected by 80%)

Analysis:

这张图上辫状河道（网状河道）该如何绘制草图。

第一问是让考生根据其显示的主要特征画出这张图的简图。

首先，这张图上你能看到什么？

1.several river channels (有好几条河道)

2.islands/eyots [vegetated or not] (有好几处或有树林或光秃秃的岛屿)

3.several river channels (沿岸有小沙洲)

在绘制简图的时候我们要注意虽然不用和图片一模一样，但基本的特征要具备，不能完全是自己想象的河道啊。此时，在IG阶段所学的图例就可以用上啦，首先是河道与岛屿要用不同的图例，然后光秃秃的小岛和有树林的小岛要有区分，沉积出来的河岸有沙子堆在那也要显示出来。

赶紧动手试试吧～虽然是无奖活动，但GEO会po出“答题大触”，注意只能用一种颜色的笔啊，而且注明用了多长时间哟～因为批改的时候是黑白扫描进电脑的。

不要描述一些你根本没有在图上看到的信息，仅仅是因为你学到过就生搬硬套上去是在浪费时间，而且对于回答之后的问题有害无益。

第二问是让考生根据自己在图中所看到的特征来分析这些特征出现的原因，准确来说是在问辫状河道的形成原因，还记得我们所学的内容吗？

When the river channel is divided by islands or bars. Islands are vegetated and long-lived whereas bars are unvegetated, less stable and often short-term features.

Braided channels are formed by various factors, for example:

a steep channel gradient 河道坡度陡变

a large proportion of coarse material 大量沉积物

easily erodible bank material 河岸易侵蚀

highly variable discharge 流量变化大 【课本P10】

Be my guest:

(b)The fluctuation in discharge and river energy loss are crucial to the large amount of coarse materials to be deposit. As time goes by, some of the unstabelised bare bars become vegetated islands. And once they become stable by vegetation, it can influence the river channels’ nature.

Connections:

The main contributing factor to the formation of braided streams is the sediment load carried by the river. Once the sediment load in a river reaches a certain level it is deposited on the slow moving and shallow parts of a river such as at meandering points of the river.

These large deposits make islands in rivers and braided channels are formed.

Q2 (selected by 60%)

Analysis:

第一问太过简单了，我用英文再强调一下考试技巧：

If you see how we say “subtropical high”, you can play a trick since you know sub is “near”, and you also know the wind goes from high pressure to low. Then we can easily mark A as tropical low. Similarly, B will be subpolar low.

Of course pressure A and B have their “textbook name”as Equatorial low and Temperate low respectively. But they are both right answers.

And I don’t mind say this again: read the question word by word(一字不差地读清题目问的是什么). C and D are asking for the wind’s name. There are also two ways of answer for C because it is trade wind. If you don’t know the name, easy, clam down, try to draw a direction, so that you would know it is easterlies, it is N.E in north hemisphere, and S.E in south part, so what’s the similarity? It is from the East.

Luckily, the next D can also use this method to solve. N.E polar winds and S.E polar winds can both identified as East winds, or we say Easterlies.

After we finish labelling the pressure and wind, we shall move on to how the system works.

第二问是两个问题，分数对半分，前者需要解释气压系统，后者需要解释气压带对全球气温模式的影响。

气压系统反映的正是地面和大气的温度差异啊，我们在2.2开始就学习过地球上的热量分布不均，赤道最多，两极最少，而且在第二课时的时候学习了相关的三圈环流，在小测验中也考核过结合绘图来解释全球气压带与风带的分布。

Be my guest:

The pressure system is a reflection of the heating of the earth’s surface and atmosphere. The equator area gets heated most through concentrated insolation(which is dispersed near the poles). It warms the air, leading to a rise, producing low pressure in equatorial area. When it comes to a subtropical area, the air descends, causing the high pressure. [tip: we are talking about the air pressure near the earth. 我们这里说的气压带是近地面的气压哟]

The surface wind blow from high to low pressure areas, which means the heat is transferred around the globe by winds. That brings a re-dirstribution of heat globally. That’s how pressure systems influence on global patterns of pressure.

Connections:

Try to practice draw this diagram yourself as a test, if you didn't get a full score.

(可以按书本P37页为准，但也要灵活变通）

Q3 (selected by 60%)

被chemical withering 包围着的当然是chemical weathering, 典型的地貌特征是喀斯特，化学风化需要水溶性岩石的存在。在一个降水量较少的地方，比如西北的魔鬼城，就是物理风化的结果，所以A和B分别是strong chemical weathering(较强的化学风化)和weak physical/mechanical weathering(较弱的物理风化)。

关于这道题我不多讲，我们将在周五的时候进行对第三章的完整复习，提醒在整理错题的时候可以参阅书本P65页。

注意带好脑子和纸笔来找我做单独辅导哟～

另外我们的高速列车“GEO”号即将在22天后进站，再次提醒：

你将独自进场。