1．take in 吸收，接受；领会

　　2．process vt. 加工，处理 n. 程序，过程，步骤

　　3．depend on 依靠，依赖

　　4．stimulate vt. 刺激

　　5．conscious adj. 意识到的；神志清醒的

　　1．What are senses?

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　　2．How do our sense organs work?

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　　【答案】　1.Senses are the physical means by which all living things see，hear，smell，taste，and touch.

　　2．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.

Section Ⅰ　

Welcome to the unit & Reading－Preparing

　　根据提示写出下列单词

　　1．________ vt. 使糊涂，使迷惑

2．________ vt.&n. 预测，预报