发布时间 : 星期一 文章施心远主编《听力教程》3-（第2版）Unit-7答案更新完毕开始阅读78356f63cd1755270722192e453610661fd95a61
2. (F) A pregnant mother's diet can affect her child's health shortly after the child is born.
3. (F) Health before pregnancy has little influence on the baby’s health. 4. (T) The young rodents from the low-protein group had higher blood pressure. 5. (F) The young rodents from the high-protein group were more hyperactive than the control group.
6. (T) Animals with vitamin B deficiencies might have offspring with higher blood pressure.
7. (T) Animals with vitamin B deficiencies may suffer obese and diabetes. 8. (F) It's best to eat right after you get pregnant.
News Item2
While the latest vaccines are available to children in the developed world, the situation is very different in poorer countries. According to a joint report by the World Health Organization, the World Bank and the UN Children’s Fund, just 50 percent of children in sub-Saharan Africa are immunized in their first year of life against diseases like tuberculosis, measles, tetanus, and whooping cough.
The report says in some developing countries fewer than one in twenty children are vaccinated.
Dr Paul Fife of UNICEF says many developing countries are not able to buy vaccines that are widely available, and even discounted in the industrialized world. He says UNICEF, the single largest buyer of vaccines for children, is also finding
difficulty locating the needed medicines.
The head of the World Health Organization’s vaccine program, Dr Daniel Tarahtola, says one way to address the vaccine shortage is for more production in the developing world.
The report says that although the market for vaccines in developing countries is potentially huge, with more than 130 million children born there each year, drug companies target most of their vaccines to the countries of the developed world. Exercise A
Directions: Listen to the news and complete the summary.
This news item is about the shortage of vaccines in developing countries. Exercise B
Directions: Listen to the news again and complete the following passage. Vaccines are not available to children in many developing countries. Just 50 percent of children in sub-Saharan Africa are immunized in their first year of life against diseases. In some developing countries fewer than one in twenty children are vaccinated.
Many developing countries are not able to buy vaccines that are widely available, and even discounted in the industrialized world. One way to address the vaccine shortage is for more production in the developing world.
Although the market for vaccines in developing countries is potentially huge, with more than 130 million children born there each year, drug companies target most of their vaccines to the countries of the developed world.
News item 3
AIDS Vaccine Test in Thailand Shows Some Promise
Closer to home ... an experimental AIDS vaccine has proved partly effective in a test involving 16,000 volunteers in Thailand.
For a variety of reasons, HIV — the virus that causes AIDS — has stymied efforts to develop a vaccine, and this new vaccine was only about 31 percent effective, according to the researchers. That's not great, but it's the best result yet, and the limited success may help researchers improve its effectiveness.
U.S. Ambassador to Thailand Eric John noted the significance of the vaccine trial. JOHN: \will be more studies of this vaccine regimen, and perhaps other vaccines tested. ... This trial will be recognized as a testament to Thailand's ability to successfully execute a complicated vaccine trial, the largest ever attempted, that ended with a credible conclusion, and that brought us one step closer to an HIV vaccine\Even if the vaccine only modestly reduces a person's risk of developing AIDS, it could play an important role in combating the disease, which the United Nations estimates killed two million people in 2007.
A: Directions: Listen to the news and complete the summary.
This news item is about an AIDS vaccine test in Thailand which shows some promise in combating the desease. Exercise B
Directions: Listen to the news again and answer the following questions.
1. An experimental AIDS vaccine has proved partly effective in a test in Thailand. 2. Because for a variety of reasons, HIV has stymied efforts to develop a vaccine. 3. This new vaccine was only 31 percent effective.
4. The limited success may help researchers improve its effectiveness. 5. Yes it’s largest ever attempted.
6. The UN estimates that AIDS killed two million people in 2007.
Section four part 1
World TB day
In the late 19th century, tuberculosis – a bacterial disease spread through the air– killed one out of every seven people in the United States and in Europe. Today, this infectious disease remains the second leading killer in the world after AIDS, with more than two million TB-related deaths each year. Tuberculosis strikes somewhere in the world every second. According to Michael Iademarco of the US Centers for Disease Control– the disease primarily plagues developing countries.
―Countries such as India, and China, Vietnam, the Philippines. There is a list of 23 high-burdened countries in the world. It’s from this set of 23 countries that eighty percent of the world’s TB burden comes from.‖
Dr Iademarco says that poverty and poor health conditions contribute significantly to the spread of tuberculosis in those countries.
―Many of these 23 high-burdened countries, for example, are lower or low