看道英语阅读题~Dear Boris,Thanks for your nice letter.After I had s

看道英语阅读题~
Dear Boris,
Thanks for your nice letter.
After I had spent a week with my English family,I slowly began to understand their English
a little better.It’s very different from what I learned at school!Students in my group are from different cities of Britain and their dialects (方言) are different too!Some of their accents (口音) are quite strong and they also have their own words and expressions.
But it’s not the language that’s different and surprising.Before I came to England I had thought that fish and chips were eaten every day.That’s quite wrong!I get rather mad now when I hear all the foolish words about typical (典型的) English food.
I had expected to see “London fog”.Do you remember our texts about it?We had no idea that most of this ‘thick fog’ disappeared many years ago when people stopped using coal in their homes.But the idea to speak about the weather was very helpful.The weather in London is really changeable.
On the other hand habits are different.People tell me what is typically British here in London is not always typical in Wales or Scotland.Local habits and traditions are not the same as what we knew.
But what is ordinary for all British is that they follow traditions.Probably Britain has more living signs of its past than many other countries.And people have always been proud of having ancient buildings in capitals,big cities and the countryside.
I will tell you more about Britain in my other letters.
Love from Britain,
Pete
----------------
现在一题有争议：
43.The British people like to talk about weather because ________.
A.there is thick fog in London B.they like the weather in Britain
C.the weather changes a lot D.it can be helpful
但我觉得D也可以啊~文章中是But the idea to speak about the weather was very helpful.（针对全部英国人）,题目是The British people like to talk about weather because（也是针对全部英国人）,而天气善变文章中只写了London(London不是全英国啊）,所以我觉得D也可以.C的话呢,一些意见是说helpful是问完后才有的感受,而the weather is changeable是主要的原因,因为天气善变才会去讨论才会感觉有用额.
很有争议,希望出现一个高手解决下~
BS说两个都选的- -

从应试的角度来说,C
A,光是大雾的话构不成讨论的原因.英国的气候多雨,实际上他们讨论的是雨而不是大雾
B,……
C,正因为天气变化多端,所以要讨论它
D,光是讨论天气的话,谈不上helpful,文章中也没说啥helpful或helpless的