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初三英语Lesson19 Conjoined Twins 听力
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初三英语Lesson19 Conjoined Twins 听力http://www.DearEDU.com 听力理解 Key words: 1. conjoined 联合的，共同的 2. identical（生物）同卵共生的 3. egg 卵子4. fertilize 受精，受胎 5. fraternal 异卵双生的 6. Children’s Medical Center 儿童医学中心 7. ligament 韧带，系带 8. entwine 编织，使缠绕 Exercises:I. Fill in the blanks with the words you have heard from the report. 1. _______ twins _______ about once out of every _______ births of _______ twins. 2. Medical _______ say _______ and environmental _______ are involved in the _______ of conjoined twins. 3. Conjoined twins may be _______ only by a _______ piece of tissue, or they may be _______ at the _______ or other part of the body. 4. Historically, the _______ rate for conjoined _______ has been between _______ and _______ percent. 5. The book Entwined Lives says _______ have _______ about 200 _______ to _______ conjoined twins.II. Complete the statements with the information you have heard from the report.......
