【正确答案】 B

【答案解析】[解析] 89-91
The last gallery we are going to visit today is the city's newest. You will notice that the construction of this building is unique. This is because this building is the only purposely built sculpture gallery in the state. Originally, all of the sculptures in this building were kept in the City Gardens. However, because of the effects of weather and the danger of damage, the City Government decided to build this gallery to house 250 of the world's most important sculptures, Let's make our way inside and see what all the fuss is about.
[词汇] This is because...这是(前面提到的内容)因为……→前面说的内容是结果，because后面的是原因。That's why...(这是……的原因)前面提到的内容是原因，why后面是结果。
Let's make our way inside and see..让我们走进去看一下……
中级问题
通过前面的第1句话The last gallery we are going to visit today is...(今天我们要去参观的最后一个画廊是……)可以知道，文章类型是观光介绍，今天的参观地点是画廊，所以全部内容是关于画廊的介绍。

【正确答案】 A

【答案解析】中级问题
问建筑建造的原因的问题。问题用的是过去时，要着眼于“目的”和construction(建造)听短文。在文章的后半部分有the city Government decided to build this gallery to...(市政府出于……的目的建造了画廊)一句话，这就是本题的线索。要记住，关于目的的表述常常用“to+...”的形式。但是在本题中，如果不知道house这个词的动词用法(保存)，则很难选出正确答案。

【正确答案】 D

【答案解析】初级问题
在做第90题时关键的核心句子中有正确答案，整篇文章只有这一个地方有关于数字的表达，所以本题很容易解决。