更多"According to German scientists, a v"的相关试题:
[填空题]According to German scientists, a vaccine for avian flu H5N1 will be available in ______.
[单项选择]Scientists said Thursday that a new AIDS vaccine, the first ever declared to protect a significant minority of humans against the disease, would be studied to answer two fundamental questions: why it worked in some people but not in others, and why those infected despite vaccination got no benefit at all.
The vaccine—known as RV 144, a combination of two genetically engineered vaccines, neither of which had worked before in humanslwas declared a qualified success after a six-year clinical trial on more than 16,000 volunteers in Thailand. Those who were vaccinated became infected at a rate nearly one-third lower than the others, the sponsors said Thursday morning.
"I don’t want to use a word like ’breakthrough,’ but I don’t think there’s any doubt that this is a very important result," said Dr. Anthony S. Fauci, the director of the National Institute of Allergy and Infectious Diseases, which is one of the trial’s backers. "For more than 20 years now, vaccine trials have es
A. It has been on trial for six years.
B. People who get it are protected against AIDS.
C. People who get it are not as easily infected as others.
D. It is regarded as a very important finding in the history.
[填空题]According to scientists possible threat from nanomaterials may cause some severe problems.
[简答题]According to scientists, many people believe that physical cleanliness is strongly linked to ______.
[单项选择]According to scientists, to keep down concentrations of greenhouse gases, we should______.
A. stop gas emissions
B. lower the temperature
C. reduce the use of coal, oil, and gas
D. cut off the use of coal, oil, and gas
[单项选择]According to some scientists, Hemps are preferable to trees chiefly because
A. they are more easily cultivated.
B. they have been cultivated by many cultures for a long time.
C. they can produce more paper than trees.
D. they can provide more endurable fibers than trees.
[单项选择]According to the passage, scientists have decided that sulfur aerosols from volcanic eruptions affect global temperatures to a greater extent than ash clouds because
A. the greenhouse gas effect produced by human activities tends to have a much greater environmental effect than that of volcanic explosions
B. clouds of sulfur-rich gases tend to achieve greater heights in the stratosphere than do ash clouds
C. a particular explosion producing high sulfur and little ash had a greater environmental effect than the converse
D. the burning of fossil fuels tends to exacerbate the effects of sulfurous aerosols, but not those of ash clouds
E. global warming effects tend to minimize the impact of ash clouds, but not those of sulfurous aerosols
[填空题]According to many scientists, solar energy will be used（）(extend) in the 21 st century.
[填空题]According to the scientists it is the emission of CO(2 by human beings that causes the increases of CO2 levels.
[简答题]
According to the new school of scientists, technology is an
overlooked force in expanding the horizons of scientific knowledge.
46)Science moves forward, they say, not so much through the insights of great
men of genius as because of more ordinary things like improved techniques and
tools. 47)"In short", a leader of the new school contends, "the
scientific revolution, as we call it, was largely the improvement and invention
and use of a series of instruments that expanded the reach of science in
innumerable directions."
48)Over the years, tools and
technology themselves as a source of fundamental innovation have largely been
ignored by historians and philosophers of science. The modern school that
hails technology argues that such masters as Galileo, Newton, Maxwell, Einstein,
and inventors such as Edison attached great importance to, and derived great
benefit from, craft information and technological devices of different kin
