泽平 的ScalersTalk第八轮新概念朗读持续力训练Day8

练习材料：

Lesson 20-2     Snake poison

In fact, it wouldbe an assistance to all carnivores though it would be a two-edged weapon whenthey fought each other. But, of the vertebrates, unpredictable Nature selectedonly snakes (and one lizard). One wonders also why Nature, with some snakes,concocted poison of such extreme potency.

In the conversionof saliva into poison, one might suppose that a fixed process took place. Itdid not; some snakes manufacture a poison different in every respect from thatof others, as different as arsenic is from strychnine, and having different effects.One poison acts on the nerves, the other on the blood.

The makers of thenerve poison include the mambas and the cobras and their venom is calledneurotoxic.

sneɪk ˈpɔɪzᵊn

ɪn fækt, ɪt wʊd

biː ən əˈsɪstəns tuː ɔːl ˈkɑːnɪvɔːz ðəʊ ɪt wʊd biː ə ˈtuːˈɛʤd ˈwɛpən wɛn ðeɪ fɔːt iːʧ ˈʌðə. bʌt, ɒvðə ˈvɜːtɪbrɪts, ˌʌnprɪˈdɪktəbᵊl ˈneɪʧə sɪˈlɛktɪd ˈəʊnli sneɪks (ænd wʌn ˈlɪzəd).wʌn ˈwʌndəz ˈɔːlsəʊ waɪ ˈneɪʧə, wɪð sʌm sneɪks, kənˈkɒktɪd ˈpɔɪzᵊn ɒv sʌʧ ɪksˈtriːmˈpəʊtənsi.

ɪn ðə kənˈvɜːʃᵊn ɒv

səˈlaɪvə ˈɪntuː ˈpɔɪzᵊn, wʌn maɪt səˈpəʊz ðæt ə fɪkst ˈprəʊsɛs tʊk pleɪs. ɪt dɪd

nɒt; sʌm sneɪks ˌmænjəˈfækʧər ə ˈpɔɪzᵊn ˈdɪfrənt ɪn ˈɛvri rɪsˈpɛkt frɒm ðæt ɒv

ˈʌðəz, æz ˈdɪfrənt æz ˈɑːsnɪk ɪz frɒm ˈstrɪkniːn, ænd ˈhævɪŋ ˈdɪfrənt ɪˈfɛkts. wʌn ˈpɔɪzᵊn æktsɒn ðə nɜːvz, ði ˈʌðər ɒn ðə blʌd.

ðə ˈmeɪkəz ɒv ðə nɜːvˈpɔɪzᵊn ɪnˈkluːd ðə mambas ænd ðə ˈkəʊbrəz ænd ðeə ˈvɛnəm ɪz kɔːld neurotoxic.

任务配置：L0 + L4

知识笔记：

单词：1、assistance：帮助，援助，2、carnivore：肉食动物，3、vertebrate：脊椎动物，4、unpredictable：不可预料的，5、lizard：蜥蜴，6、concoct：编造，捏造，预备，7、potency：效力，8、conversion：转换，转变，换位，9、arsenic：砷，砒，10、strychnine：士的宁，11、mambas：曼巴蛇，12、cobras：眼镜蛇，13、venom：毒液，毒汁，毒物，14、neurotoxic：神经毒性

音标：

练习感悟：第一遍居然比达标少1秒，第二遍刚好达标，看来我读英语的进步还是可以的。