阅读理解 Communications technologies are far from equal when it comes to conveying the truth. The first study to compare honesty across a range of communications media has found that emails are automatically recorded — and can come back to haunt (困扰) you — appears to be the key to the finding. Jeff Hancock of Cornell University in Ithaca. New York, asked 30 students to keep a communications diary for a week. In it they noted the number of conversations or email exchanges they had lasting more than 10 minutes, and confessed to how many lies they told. Hancock then worked out the number of lies per conversation for each medium. He found that lies made up 14 per cent of emails, 21 per cent of instant messages, 27 per cent of face-to-face interactions and an astonishing 37 per cent of phone calls. His results, to be presented at the conference on human-computer interaction in Vienna, Austria, in April, have surprised psychologists. Some expected entailers to be the biggest liars, reasoning that because deception makes people uncomfortable, the detachment (非直接接触) of emailing would make it easier to lie. Others expected people to lie more in face-to-face exchanges because we are most practiced at that form of communication. But Hancock says it is also crucial whether a conversation is being recorded and could be reread, and whether it occurs in real time. People appear to be afraid to lie when they know the communica?tion could later be used to hold them to account, he says. This is why fewer lies appear in email than on the phone. People are also more likely to lie in real time — in an instant message or phone call, say — than if they have time to think of a response, says Hancock. He found many lies are spontaneous(脱口而出的) responses to an unexpected demand, such as : "Do you like my dress?" Hancock hopes his research will help companies work out the best ways for their employees to communicate. For instance, the phone might be the best medium for sales where employees are encouraged to stretch the truth. But given his results, work assessment, where honesty is a priority, might be best done using email. Communications technologies are far from equal when it comes to conveying the truth. The first study to compare honesty across a range of communications media has found that emails are automatically recorded — and can come back to haunt (困扰) you — appears to be the key to the finding. Jeff Hancock of Cornell University in Ithaca. New York, asked 30 students to keep a communications diary for a week. In it they noted the number of conversations or email exchanges they had lasting more than 10 minutes, and confessed to how many lies they told. Hancock then worked out the number of lies per conversation for each medium. He found that lies made up 14 per cent of emails, 21 per cent of instant messages, 27 per cent of face-to-face interactions and an astonishing 37 per cent of phone calls. His results, to be presented at the conference on human-computer interaction in Vienna, Austria, in April, have surprised psychologists. Some expected entailers to be the biggest liars, reasoning that because deception makes people uncomfortable, the detachment (非直接接触) of emailing would make it easier to lie. Others expected people to lie more in face-to-face exchanges because we are most practiced at that form of communication. But Hancock says it is also crucial whether a conversation is being recorded and could be reread, and whether it occurs in real time. People appear to be afraid to lie when they know the communica?tion could later be used to hold them to account, he says. This is why fewer lies appear in email than on the phone. People are also more likely to lie in real time — in an instant message or phone call, say — than if they have time to think of a response, says Hancock. He found many lies are spontaneous(脱口而出的) responses to an unexpected demand, such as : "Do you like my dress?" Hancock hopes his research will help companies work out the best ways for their employees to communicate. For instance, the phone might be the best medium for sales where employees are encouraged to stretch the truth. But given his results, work assessment, where honesty is a priority, might be best done using email.
文章大意：说明文。本文比较了各种媒介交流时说谎话的几率，并分析了原因。文章思路为：研究方式及结果——与研究结果不同的观点——论证研究结果——研究结果的利用价值。Para．1-Para．2为研究结果：各种交流媒介中，人们在打电话时说谎的几率最高，发电子邮件时说谎话的几率最低(第二段前半段介绍了研究方式)。Para．3为与研究结果不同的意见：部分心理学家的看法与该研究结果恰好相反。Para．4-Para．5为研究者对研究结果予以论证。Para．6为研究结果可能的利用价值：帮助公司为员工找出最好的交流方式。

单选题 Hancock''s study focuses on________.

单选题 Hancock''s research finding surprised those who believed that_________.

单选题 According to the passage, why are people, more likely to tell the truth through certain media of communication ?

单选题 According to Hancock, the telephone is a preferable medium for promoting sales because_________.

单选题 It can be inferred from the passage that_________.