Hundreds of years ago, Charles Darwin predicted that facial expressions of emotion are {#blank#}1{#/blank#}. If you've ever seen an episode of the popular US TV drama Lie To Me, you will really understand facial expressions. The leading actor of the show, Dr. Cal Lightman has spent 20 years studying nonverbal communication and facial expressions, which allows him to point out other people's studying nonverbal communication and facial expressions which allows him to point out other people's {#blank#}2{#/blank#} and on many occasions, to be skilled at tricking in order to get the truth.

    Is there really much truth behind this science of {#blank#}3{#/blank#} human emotions through expressions? Paul Ekman, a(n) {#blank#}4{#/blank#} psychologist whose work focuses on mapping facial expressions, is Lie To Me's scientific advisor and the following are some of his explanations.

    Hand-to-face gesture indicates a lie.

    Each micro-expression is unique to {#blank#}5{#/blank#} specific emotions because the person is often unaware of doing it. But it doesn't necessarily mean that they are lying when someone uses a hand to hide part of his face. The person could be holding back information but you may better consider looking at other more important clues rather than just the simple hand-to-face gesture.

    A liar refuses eye contact.

    People look away when they are thinking carefully and considering each word before it is spoken, not just when they are {#blank#}6{#/blank#} an excuse. Oblique eyebrows are a very reliable {#blank#}7{#/blank#} of sadness and few people can make this {#blank#}8{#/blank#} expression, so it is actually never faked.

    Guilty knowledge technique is {#blank#}9{#/blank#}.

    Lightman often uses the guilty knowledge technique, mentioning something that only the guilty person will know about and show a(n) {#blank#}10{#/blank#}. This is often used in polygraph exams: "Was the person strangled, shot or stabbed to death?" Only the killer knows and is likely to respond physiologically when the actual weapon is mentioned.

    Do you like to play with kids?{#blank#}1{#/blank#}Easter Day(复活节), students at Nazareth Academy in Texas, US, got a{#blank#}2{#/blank#}to play with kindergarten kids.

    Easter Day was on March 27 this year. It's a{#blank#}3{#/blank#}festival in western culture. Each student paired with a kid. They did crafts(手工作品), had an Easter egg hunt(寻找彩蛋活动) and did other activities to celebrate. The school{#blank#}4{#/blank#}this activity.

    They spent a lot of time{#blank#}5{#/blank#}kindergarten kids how to make Easter arts and crafts. Mitul Agarwal, 14, an eighth-grader, taught his partner Ruben Gonzalez how to use scissors(剪刀){#blank#}6{#/blank#}paper. This 5-year-old boy tried to get the scissor cuts{#blank#}7{#/blank#}while Mitul sat next to him to help.

    "Working with little kids is{#blank#}8{#/blank#}. We do a lot of{#blank#}9{#/blank#}about teamwork," Mitu told the Victoria Advocate, a local newspaper. "We teach them things that we know. And we{#blank#}10{#/blank#}about things that they know."