医护英语考试(三级)辅导
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医护英语考试（三级）辅导医护英语水平考试(三级)辅导METS LEVEL IIIUNIT ONETEXTPrenatal DevelopmentNormally, it takes about 40 weeks for a single cell to grow up intoa fully formed newborn baby. The long period takes on dramatic changes and is typically divided into three phases: the zygote phase, the embryo phase and the fetus phase.The zygote refers to the single-celled form of the new baby produced by fertilization. It travels along the mother?s fallopian tube andfinally embeds itself intothe uterus. At the same time, the zygote divides rapidly and turnsinto the multi-celled form, called blastula.After the first three weeks of zygote phase follows the embryo phase. Dramatic changes and organ and system developments take place duringthis phase. The placenta comes into being and establishes the life-support system between the embryo and the mother. It is responsible for gas and blood supply and waste excretion of the new baby. Meanwhile,part of the blastula differentiates into the amniotic sac, whichcontains amniotic fluid and the baby.The main part of embryo differentiates into three layers. Theoutside layer, called ectoderm, eventually becomes the spinal column,the nervous system and the skin. The middle layer, named mesoderm, later develops into muscle and bone. The inner layer, named endoderm, differentiates into the internal organs.During the fourth and fifth weeks after conception, heartbeat can be detected and limbs, hands or even fingers apparent. Vital organs, including brain, lungs, stomach and kidneys are formed and start functioning in the following weeks. By the end of the ninth week, testes or ovaries are visible to tell the sex of the baby.thThe last phase of fetus begins from the 12 week after conception. The babywith fully developed organs and systems comes into the rapid growth period. Variousthkinds of movements are detected by the 14 week, including swallow, digestion,urination and limb movements. In the later phase of fetus development, body size and weight are dramatically increased till birth.ththSensory perceptions are developed between the 13 and 29 weeks. The fetus isalert to the outside noise, sensitive to different tastes and ableto initiate neurological reactions to stress hormones. Therefore, pregnant women often complain of the vigorous kicking by the fetus especially when the mothers themselves fall into distress.New Wordsprenatal [pri:neitl] adj. 出生以前的 zygote [zaiɡ?ut] n. 合子，受精卵1embryo [embri?u] n.胚胎amniotic fluid [æmni,tik flu:id]n.羊水 fetus [fi:t?s] n.胎儿 ectoderm [ekt?ud?:m]n.外胚层 fertilization[f?:tilaizei,?n] n. 受精，受spinal column [spainl k,l?m] n.脊柱孕mesoderm [mes?d?:m] n.中胚层 fallopian tube [f?l?upi?n tju:b] n.输卵管endoderm [end?ud?:m] n.内胚层 embed [imbed] v.把……嵌入，埋入conception [k?nsep,?n] n.怀孕 uterus [ju:t?r?s] n.子宫 testis [testis] n. 睾丸blastula [blæstjul?] n.囊胚 ovary [?uv?ri] n.卵巢placenta [pl?sent?]n.胎盘 digestion [did,est,?n] n.消化 excretion [ekskri: ,?n]n. 排泄 urination [ju?rinei,?n] n.排尿 differentiate[dif?ren,ieit]v.分化 sensory perception [sens?ri p?sep,?n] n.amnioticsac [æmni,tik sæk] n.羊膜囊感知觉NOTES OF THE TEXT1. Normally, it takes about 40 weeks for a single cell to grow upinto a fully formednewborn baby. 正常情况下，一个单细胞生长成发育完善的新生儿需要经历40周的时间。
本句句型可以归纳成: It takes + 时间 + 不定式。
其中，it为形式主语，指代其后的不定式短语。
我们在语言学习的过程中，应该做个有心人，不断地归纳一些句型，这样做，有利于提高自己的英语实际运用能力。
2. The long period takes on dramatic changes and is typically divided into threephases: the zygote phase, the embryo phase and the fetus phase.这段漫长的时期中会发生翻天覆地的变化，通常可划分成三个阶段:受精卵期、胚胎期和胎儿期。
先注意本句主语，The long period 再对照其中文表达方式，你可以发现英文思维方式的点点滴滴。
说句实话，学英文的中国学生要写出这样的句子有一定难度。
但是学习中多多注意这样的思维方式的观摩与学习，可以避免写出中国式英语，那种对于英国人来说充满异国情的英文。
3. The fetus is alert to the outside noise, sensitive to different tastes and able to initiateneurological reactions to stress hormones. 他们对外界声响产生了警觉，对各种味道有了感应，并对各种应激激素开始产生神经反应。
注意搭配be alert to，我们在学习英文的过程中，要十分重视词组的积累。
有一个说法很有道理:背单词不如背词组，这是因为，词组在构句过程中，能量更大。
不要寄希望于临机一动，那是不可靠的。
因此，不妨做个有心人，边学习，边收集，日积月累，必有成效。
学习建议:学完课文以后，可以试着把课文译文翻译成英文，再与课文对照，以加深对课文的理解和对语言点的掌握。
READING COMPREHENSION1. The single-celled form of the new baby is called[A] Blastula[B] Zygote[C] Embryo2[D] Placenta2. Which part is responsible for oxygen supply for the fetus?[A] Blastula[B] Zygote[C] Embryo[D] Placenta3. How long does it take the fertilized zygote to develop into a mature newborn?[A] 7 months[B] 8 months[C] 9 months[D] 10 months4. The endoderm is the original form of the[A] Skin[B] Muscle[C] Organs[D] Spinal column5. The lungs come into function at therd[A] 2 weekth[B] 4 weekth[C] 6 weekth[D] 12 week6. How would fetus response to his mother?s depression? [A] He decreases its movements. [B] He increases its movements. [C] He reduces its growth.[D] He quickens its growth.ANSWERS1(B2(D.3(D.4(C.5(C.6(B.阅读点津应试技巧:定位答题依据阅读理解需要运用技巧，首先，学生要弄懂“定位”解题信息的方法，因为在定位答案过程中，这一方法可以起到关键作用。
