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Straight or arched （彎的），thick or thin --- eyebrows come in many s（1）hapeshapes and sizes.But what are eyebrows even for？They don't keep us warm like our hair，or help us b（2）reathereathe like our nose.So why do we have them at all？
Researchers from the University of York in the UK believe that eyebrows helped us c（3）ommunicateommunicate better when we were still evolving （進化）.
Early humans had large brow ridges （眉骨）.This helped them show their strength.Later，as the human face evolved to become smaller and flatter，our eyebrows allowed us to express more complex emotions，as well as b（4）etteretter understand others' emotions，the Guardian reported.A quick flash of the eyebrows，for example，is a s（5）ignalignal that someone is willing to interact （互動） with others，w（6）hilehile pulling our eyebrows up in the middle is an expression of sympathy （同情），Penny Spikins from York University told the The Daily Telegraph.
If you still find this hard to understand，just draw a simple face and draw a line a（7）bovebove the eyes.You can draw lines in different shapes and directions.You will find it is very easy to show anger，f（8）earear，or surprise in a face.
But this is not the only purpose of our eyebrows.They can also p（9）rotectrotect our eyes.Their arched shape can help to move rain or sweat around to the sides of our faces，k（10）eepingeeping our eyes dry，the BBC reported.Together with our eyelashes （眼睫毛），eyebrows can also help to keep dust and other things out of our eyes.
Some researchers believe that if we didn't have eyebrows，we would have evolved some other facial feature to perform the same functions （功能）.That could make us look quite different.
【考點】人與社會．
【答案】hapes；reathe；ommunicate；etter；ignal；hile；bove；ear；rotect；eeping
【解答】
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發(fā)布：2024/6/27 10:35:59組卷：0引用：1難度：0.5
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