【正确答案】 B

【答案解析】[解析] 77-79
Good morning. As mayor, I intend to Undertake an upgrade of highways, along with launching new subway and bus lines. While we need better schools and hospitals,as our city grows, we also must ensure that people can get where they need to goas quickly as possible. We therefore have to generate a broad plan on how this canbe done efficiently. We have invited Professors James Hart and Kim Won-su to dothis work for us. They will now give us a guide as to how we can pick the most cost-effective systems. Once they've completed that, we'll break for lunch. When wecome back, you will have thirty minutes to ask questions. Now let's get started bygiving a warm hand of applause to Professor James Hart. Thank you.

发言或广播类的“主题”一般都会出现在开头。这是“市长见面会”上的一段发言。开头的“Iintend to undertake an upgrade of highways”就是重点，讲的是“公路改造”。(B)对此进行了同义替换，是这道题的。像“upgrade→Developing”．“highways→transportation”这类“同义词替换”是Part 4里经常出现的。

【正确答案】 D

【答案解析】我们首先需要确认问题中的“关键名词”(在这道题中是“the break”)。在听力题中，关键词的后面往往就藏着解题线索。在这道题中，由“we'll break for Iunch”后面“you will havethirty minutes to ask questions”可知，在“休息之后”安排了提问的时间，因此是(D)。我们要在留意关键词的同时，找到解题线索，这是Part 4的基本答题思路。

【正确答案】 A

【答案解析】这道题问的是“这段发言的进行时间”，所以我们应该注意听发言的开头部分。尤其要留意开头的寒暄部分，因为这里藏有陷阱。这是一道往年的真题。如果我们不集中注意力去听，很可能就会把“Good morning”疏忽掉，所以我们要当心。有时，与“时间”相关的信息可能就藏在开头的“寒暄语”中。