考研听力基本功4 Passage7
时间：2018-12-04 作者：英语课 分类：考研英语听力基本功4
Of the more than 80 million children born every year in the developing countrie
[00:05.43]and estimated 5 million die
[00:08.65]and at least twice as many are disabled by disease which have been largely eliminated in developed nations through immunizatio
[00:17.79]In the Sudan,the large country in Afric
[00:21.19]less than 10% of the children are vaccinated 1 against diseases such as measle
[00:26.88]polio,whooping cough,diphtheria,tetanus and tuberculosi
[00:32.55]all of which can kill or disable the unprotected chil
[00:37.67]They CAN be protected but supplying vaccine 2 is not enoug
[00:42.61]A successful immunization programme depends on a crucial factor-the COLD CHAI
[00:49.24]Without a system of storage and distribution which keeps the vaccine below the critical 8
[00:56.16]the vaccine deteriorates 3 and its power is los
[01:00.63]The problem of establishing a cold chain is particularly acute in a hot country like the Sud
[01:07.27]where the distances the vaccine must travel are so vast.
- I was vaccinated against tetanus. 我接种了破伤风疫苗。
- Were you vaccinated against smallpox as a child? 你小时候打过天花疫苗吗？
- The polio vaccine has saved millions of lives.脊髓灰质炎疫苗挽救了数以百万计的生命。
- She takes a vaccine against influenza every fall.她每年秋季接种流感疫苗。
- After a few years' planting, the quality of the potato crop deteriorates. 土豆种了几年之后就会退化。
- Virus activity deteriorates in plasma stored at room temperature. 在室温下储藏的血浆中病毒活动逐渐衰退。