【正确答案】 A

【答案解析】[听力原文] What is the best way to catch someone who is telling a lie? For a long time, the traditional method of identifying liars was to watch their body language, including facial expressions. What if the person appears to be nervous? Is the person unable to look me in the eye? Is he or she looking around the room? What about other nervous movements? Many people—from parents to police officers and airport security personnel—depend on this method. But does a person's body and face reveal the truth? Actually, using body language and facial expressions to catch someone in a lie is really hard. And it only works, seemingly, by chance. According to a new study carried out by researchers in the United Kingdom, talking is the best way to smoke out a liar. The study found that certain conversation-based techniques can help you recognize when a person is lying to you. Like many methods, this conversation method has a name. It is called Controlled Cognitive Engagement, or CCE for short. The investigation took place at one place where lying can get you into big trouble—an airport. The researchers asked volunteers to pretend they were real passengers and then lie to airport security agents. Some of the agents used spoken conversation-based methods to question these make-believe passengers. Others depended instead on the person's body language, like lack of eye contact and showing signs of nervousness. The agents talking with the passengers were 20 times more likely to catch the liars. Here are some tips for catching a liar by using the conversational CCE method. 1. Use open-ended questions These are the opposite of 'Yes' and 'No' questions. Open-ended questions force the person to stretch the story of their lies until they get caught in their own web of lies. 2. Use the element of surprise Ask questions they may not think you are going to ask. Ask questions that are surprising or off-topic. This will make it harder for them to keep lying. Or better still ask them to re-ten an event backwards in time, going from the most recent event to the earliest. This is hard enough to do with the truth, let alone a story of lies. 3. Watch for changes in confidence and speaking styles Liars will often change their speaking style when they are questioned. For example, when they feel in control they may be very talkative. But if they feel they are losing control, they may not talk much at all. What is the best way to catch a liar according to the speaker? 选项均为不定式结构，推测本题可能问目的、打算或做法等；再结合engage in、watch、observe、see这些动词，可推测问题与“观察”“注视”的行为动作相关。题目问抓住说谎者最好的方法是什么。录音靠前部分讲到：根据一项英国研究者的新研究结果，谈话是查出说谎者最好的方法(talking is the best way)，题目中的catch a liar为录音中smoke out a liar的同义表达，A项用engage people in conversations对talking进行了同义替换，为正确答案。讲座一开头提出问题——发现说谎者最好的方法是什么?接着提到了B“肢体语言”、C“面部表情”和D“紧张或否”这几项。但要注意的是录音说它们都属于传统的方法(the traditional method)，演讲者随后表示这些方法实际很难运用(really hard)，三项均可排除。

【正确答案】 A

【答案解析】[听力原文] What do we learn about the investigation mentioned in the lecture? 讲座中间部分提到了一种叫Controlled Cognitive Engagement(简称CCE)的方法，演讲者详细描述了研究者是如何进行investigation的。其中提到，这个调查是在一个机场(an airport)进行的，A项与之相符，故为答案。录音中提到另一些security agents通过肢体语言(比如是否缺乏眼神交流等)来判断一个人是否说谎，但不是说避开眼神交流的人就一定说谎，故B项不正确。研究结果表明，使用谈话方法比使用传统方法鉴别说谎者准确20倍，数字20指倍数，而非C项中所说的说谎人数。在详述该调查之前，演讲者已经点出了这种方法的名字，故D项“研究者想方设法给这种方法取名”不正确。

【正确答案】 C

【答案解析】[听力原文] What does the conversational CCE method include according to the speaker? 题目问CCE这种方法的相关信息。讲座最后一部分是关于使用CCE这个以谈话为主的识别说谎者的方法的一些诀窍，演讲者讲了三点：第一，尽量多问开放性的问题；第二，尽量多问让回答者出乎意料的、或跟主题没有关联的问题；第三，多注意回答者在说话方式和信心方面的变化。C项“密切注意信心方面的变化”即录音中的第三点，故为答案。A项“问更多是非题”和B项“问正常和相关的问题”分别与第一、第二点提出的谈话方法相反。演讲者讲第三点时说的是说谎者在被询问时常会转换说话方式，而非要盘问者频繁转换说法方式，故排除D项。