人和动物之所以能够闻到、听到、尝到、看到、感觉到事物，是因为有感觉器官。 What's that smell？Do you hear that noise？Taste this！Look at me！Feel this，isn't it soft？When you hear，or even use these phrases，you probably don't stop to think about why we use them.Well，it's because of our senses.Without us even knowing，our sense organs(nose，eyes，ears，tongue，and skin) are taking in information and sending it to the brain for processing.If we didn't have them，we would not be able to smell，see，hear，taste，or touch anything! Senses are the physical means by which all living things see，hear，smell，taste，and touch.Each sense collects information about the world and detects changes within the body.Both people and animals get all of their knowledge from their senses，and that is why senses are so important. All senses depend on the working nerve system.Our sense organs start to work when something stimulates special nerve cells，called receptors，in a sense organ.Once stimulated，the receptors send nerve impulses along sensory nerves to the brain.Your brain then tells you what to do.For example，your sound receptors are often attacked by billions of sound waves.When these signals reach the part of the brain called the cerebral cortex，we become conscious of the sounds. [阅读障碍词] 1．process 处理 2．nerve 神经 3．stimulate 刺激，激发 4．receptor 感受器；受体 5．nerve impulse 神经冲动 6．the cerebral cortex 大脑皮层 7．become conscious of 意识到…… [诱思导读] 根据短文内容，回答下列问题 1．What are senses? Senses are the physical means by which all living things see，hear，smell，taste，and touch. 2．How do our sense organs work? When something stimulates receptors in a sense organ，the receptors send nerve impulses along sensory nerves to the brain.Your brain then tells you what to do. SectionⅠ Reading( Ⅰ ) (Welcome to the unit & Reading) Ⅰ.匹配下列单词的词性及汉语意思 ( )1.confuse A．vt.观察；注意到；评论 ( )2.forecast B．vt.抓紧，抓牢 ( )3.observe C．n.轻松，宽慰 ( )4.narrow D．vi.犹豫，迟疑不决 ( )5.approach E．adv.牢牢地，坚定地 ( )6.hesitate F．vi.&vt.靠近；着手处理 n．靠近；方法；路径 ( )7.grasp G．vt.使糊涂，使迷惑 ( )8.anxious H．adj.狭窄的 ( )9.firmly I．adj.焦虑，忧虑 ( )10.relief J．vt.&n.预测，预报 [答案] 1－5 GJAHF 6－10 DBIEC Ⅱ.选择下列句中词组的汉语意思 A．伸手 B．轻松地，安慰 C．盼望，企盼 D．密切注意 E．来帮助某人 F．看得到，在视力范围之内 1．We have to watch out for fast traffic along here. 2．The land came in sight after we had sailed for ten days. 3．The monkey reached out a hand through the bars and took the banana. 4．We have had everything we can wish for. 5．The situation workers saw her was in trouble and came to her aid. 6．The little girl smiled in relief when she was told that she had passed the exam. [答案] 1－6 DFACEB Fog by Bill Lowe Fog warning ①When Polly left home that morning，the city was already covered in a grey mist.At lunch，the radio forecast ②that the m ... ...
