VOA常速英语2007年-Advances in Stem Cell Research Mark Field of Me
时间：2019-01-20 作者：英语课 分类：VOA常速英语2007年（十二月）
By Carol Pearson
Washington
17 December 2007
2007 was a year notable for breakthroughs in medicine. VOA's Carol Pearson looks back at some of the top medical stories of the year.
One of the most promising 1 developments in health in 2007 was the discovery that adult skin can be made into cells like embryonic 3 cells.
The major ethical 4 advantage: no embryo 2 has to be destroyed.
Dr. George Daley, a researcher at Harvard University, explains the primary medical advantage. "These scientists have allowed the skin cells to take on the chameleon 5 like properties of embryonic stem cells," he explains. "They can now make any tissue in the body."
Researchers say stem cells could hold the cure to spinal 6 cord injuries and neurological diseases.
The U.S. Food and Drug Administration said this year cloned meat and milk are safe.
The agency concluded that because cloned foods cannot be distinguished 7 from their conventional counterparts, no special labeling is needed.
Meanwhile, the agency's advisory 8 committee reported that American lives are at risk due to a severe staffing shortage and outdated 9 technology. The Food and Drug Administration was once a leader on food and drug safety.
In other health news: statins, which are cholesterol 10 reducing drugs, not only protect the heart but may help delay the onset 11 of dementia and Alzheimer's disease.
Finally, we look at two devastating 12 diseases: AIDS and measles 13.
Deaths from measles have decreased by 68 percent. In Africa, the decrease is 91 percent. The World Health Organization credits this achievement to government immunization programs for children.
And there has been some progress in the fight against HIV/AIDS. The World Health Organization reports both the percentage of people living with HIV-has leveled off as have the number of new infections.
Unfortunately, sub-Saharan Africa remains 14 the epicenter of this disease.
- The results of the experiments are very promising.实验的结果充满了希望。
- We're trying to bring along one or two promising young swimmers.我们正设法培养出一两名有前途的年轻游泳选手。
- They are engaging in an embryo research.他们正在进行一项胚胎研究。
- The project was barely in embryo.该计划只是个雏形。
- It is still in an embryonic stage.它还处于萌芽阶段。
- The plan,as yet,only exists in embryonic form.这个计划迄今为止还只是在酝酿之中。
- It is necessary to get the youth to have a high ethical concept.必须使青年具有高度的道德观念。
- It was a debate which aroused fervent ethical arguments.那是一场引发强烈的伦理道德争论的辩论。
- The chameleon changes colour to match its surroundings.变色龙变换颜色以适应环境。
- The chameleon can take on the colour of its background.变色龙可呈现出与其背景相同的颜色。
- After three days in Japan,the spinal column becomes extraordinarily flexible.在日本三天，就已经使脊椎骨变得富有弹性了。
- Your spinal column is made up of 24 movable vertebrae.你的脊柱由24个活动的脊椎骨构成。
- Elephants are distinguished from other animals by their long noses.大象以其长长的鼻子显示出与其他动物的不同。
- A banquet was given in honor of the distinguished guests.宴会是为了向贵宾们致敬而举行的。
- I have worked in an advisory capacity with many hospitals.我曾在多家医院做过顾问工作。
- He was appointed to the advisory committee last month.他上个月获任命为顾问委员会委员。
- That list of addresses is outdated,many have changed.那个通讯录已经没用了，许多地址已经改了。
- Many of us conform to the outdated customs laid down by our forebears.我们许多人都遵循祖先立下的过时习俗。
- There is cholesterol in the cell of body.人体细胞里有胆固醇。
- They are determining the serum-protein and cholesterol levels.他们正在测定血清蛋白和胆固醇的浓度。
- The drug must be taken from the onset of the infection.这种药必须在感染的最初期就开始服用。
- Our troops withstood the onset of the enemy.我们的部队抵挡住了敌人的进攻。
- It is the most devastating storm in 20 years.这是20年来破坏性最大的风暴。
- Affairs do have a devastating effect on marriages.婚外情确实会对婚姻造成毁灭性的影响。
- The doctor is quite definite about Tom having measles.医生十分肯定汤姆得了麻疹。
- The doctor told her to watch out for symptoms of measles.医生叫她注意麻疹出现的症状。