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  • 美国英语听力80篇1 Lesson20

    [00:06.48]Lack of Vitamin A is the leading cause of blindness among children in deveoping countries. [00:14.55]These children do not get enough Vitamin A in the food they eat. [00:21.11]In Africa,more than 3,000,000 children suffer from blindness or...

  • 美国英语听力80篇1 Lesson19

    [00:05.80]April seventh was World Health Day. [00:09.27]The World Health Organization and the International Federation of Red Cross [00:14.52]and Red Crescent Societies made blood supply safety the message of the day. [00:20.82]Hospitals and doctors...

  • 美国英语听力80篇1 Lesson18

    [00:07.05]The American company Monsanto has announced what it calls a major development in efforts to identify all of the genes found in rice. [00:18.49]It says scientists working in the United States have produced the first plans for a genetic map o...

  • 美国英语听力80篇1 Lesson17

    [00:04.83]Last month, delegates from more than one-hundred nations approved the first international treaty [00:12.54]about trade in products made by processes of genetic engineering. [00:18.00]Genetic engineering involves changing the genes of living...

  • 美国英语听力80篇1 Lesson16

    [00:04.88]Five of the world's largest drug companies [00:03.88]have agreed to reduce the price of drugs designed to control the disease AIDS for people in developing countries. [00:12.37]The agreement was reached after talks between United Nations he...

  • 美国英语听力80篇1 Lesson15

    [00:05.12]Cassava is an important food in the diets of more than 500,000,000 people in Africa, Asia and South America. [00:15.70]However, the United Nations Food and Agriculture Organization notes that agricultural development policies [00:24.53]ofte...

  • 美国英语听力80篇1 Lesson14

    [00:05.51]The Clinton administration has declared the disease AIDS a threat to the national security of the United States. [00:14.92]White House officials say they hope the action will help build support for programs to fight the disease around the w...

  • 美国英语听力80篇1 Lesson13

    [00:04.68]13) Ageing American Farmers [00:09.38]Studies show the average age of American farmers is slowly rising. [00:15.78]Fewer young Americans are deciding to enter farming than in the past. [00:21.39]And the number of farmers and working farms i...

  • 美国英语听力80篇1 Lesson12

    [00:05.77]The youngest child in the family asks four questions during the Seder. [00:05.85]The first question is Why is this night different from other nights? [00:07.65]The family answers the questions to explain the story of Passover. [00:13.74]Dur...

  • 美国英语听力80篇1 Lesson11

    [00:05.36]Some people depend on the calendar to tell them when spring has arrived. [00:11.00]But many others know spring is here because it is time to celebrate the religious holidays of Passover and Easter. [00:21.00]Jewish people observe Passover t...

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