掌握以下重点单词和词组：

insomnia  英 [ɪnˈsɒmniə]   美 [ɪnˈsɑːmniə]   n. 失眠症，失眠

primary insomnia 原发性失眠 

transient insomnia 短暂性失眠 

chronic Insomnia 慢性失眠 ;  长期失眠 

insomnia symptoms 失眠症状

limbs [lɪmz] n. [解剖] 四肢（limb的复数）

lower limb [医]下肢；腿    upper limb 上肢

out on a limb 孤立无援；处于危险的境地 

artificial limb n. 假肢 

lethargy [ˈleθədʒi]  n. 无精打采，死气沉沉；昏睡，嗜眠（症）复数 lethargies

herb [hɜ:b] n. [植] 药草；[植] 草本植物（复数herbs）

pungent /ˈpʌndʒənt/   刺鼻的; 刺激味觉的 

理解重点句子：

1.Traditional Chinese Nursing（TCN）is a practical science that is guided by theories of Traditional Chinese Medicine（TCM），which combines prevention，health care and rehabilitation，to care for the old，the weak，the young and the handicapped，and applying specific nursing techniques to promote the health of the people．

2.The theory of Yin-Yang，which is a part of ancient Chinese philosophy，describes the movement and changing laws of things in essence．According to Chinese thought，every single thing that exists in the universe has these two aspects：a Yin and a Yang．

3.Yin-Yang is employed to explain the structure and pathological changes in the human body．Tissues and organs and signs and symptoms can be divided into Yin and Yang．For instance，Zang（solid organs，such as heart，liver，spleen，lungs，kidneys）pertains to Yin；Fu（hollow organs，such as gall bladder，stomach，large intestine，small intestine，bladder）pertains to Yang； The signs and symptoms of restlessness，insomnia and hot limbs and body can reflect Yang，whereas quiet，lethargy and cold limbs and body pertain to Yin．

1.背诵本课单词；

2.翻译理解重点句子。

3.了解消化系统常见疾病的专业单词。