一患者行甲状腺次全切除手术后出现声音嘶哑，喉镜检查显示左侧声带麻痹，分析手术中可能损伤的结构是（）
A.舌下神经
B.喉上神经
C.舌咽神经
D.左侧喉返神经
E.右侧喉返神经
参考答案：D
解析：舌下神经损伤多发生于颌下腺切除，舌下神经损伤后可使同侧舌肌萎缩；喉上神经与甲状腺上动脉并行，损伤常发生于结扎甲状腺上动脉时喉上神经内支受损时，喉黏膜感觉消失，丧失反射性咳嗽功能，易引发吸入性肺炎，饮水呛咳，喉上神经外支受损时，声带松弛，音调降低，但不嘶哑，喉镜：伤侧声带皱缩；舌咽神经损伤主要支配咽及舌头1/3的痛温觉和触觉，舌后1/3的味觉。一侧喉返神经损伤，大都引起声嘶，术后虽可由健侧声带代偿性地向患侧过度内收而恢复发音。
| 阅读下面的短文，把A-E五个句子填入文中空缺处,使短文内容完整正确。 | |
| Should mobile phones be allowed at school? __1__ Some mobile phones are more than just phones -they are being used as radios, cameras and MP4 players, and they are also used to send e-mails or surf the Internet. __2__ People have different ideas about whether students should use mobile phones at school or not. __3__ If their parents have something important to tell them, they can call their teachers for help. If someone's mobile phone rings during a Chinese class, he and his classmates can't concentrate on what the teacher is saying. Some parents also point out that their children often use their mobile phones to download (下载) unhealthy information from the Internet. __4__ Other people believe that we can find some ways to use mobile phones to help students learn better in the classroom, since many of today's mobile phones are like mini computers. And children usually know more than adults about how to use new technology (技术). __5__ What are your answers to the question?
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