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The researchers had taken the Thai trial to be more effective by ______.
A．injecting one vaccine for the immune system
B．injecting two vaccines to boost the responses
C．injecting one vaccine for the immune system and another to boost the responses
D．putting three synthetic HIV genes into the body
答案
更多“The researchers had taken the Thai trial to be more effective by ______.A．injecting one va”相关的问题
第1题
A．Y
B．N
C．NG
第2题
According to researchers, who had the strongest desire to work on full-time basis？
A．The most privileged woman.
B．The least-educated morns.
C．The best-educated mothers.
D．The mothers without any child.
第3题
A.health
B.death rate
C.longevity
D.disease
第4题
What is the basis of the researchers' new theory？
A．They performed mathematical calculations and determined that dinosaurs must have had four chambered hearts.
B．They found a fossil of an entire dinosaur end reviewed the arteries and veins flowing from and to the heart.
C．They found a fossil of a dinosaur's heart and discovered it had four chambers and one aorta.
D．They viewed a fossil of a dinosaur's heart and discovered that it had two aortas.
第5题
What can we learn from the Paragraph 3？
A．The genes of Alzheimer's disease have been decoded after the decoding of human genome.
B．Brain diseases usually are the outcome of interaction of complicated groups of genes.
C．The scientists' findings on genes have quickly lead to understanding of mental diseases.
D．the complexity had stopped the researchers from come up with treatment to mental diseases.
第6题
第7题
【C1】______ positive through the cold season could be your best【C2】______ against getting ill, new study findings suggest.
In an experiment that【C3】______ healthy volunteers to a cold or flu virus, researchers found that people with a【C4】______ sunny disposition were less likely to【C5】______ ill. The findings, published in the journal Psychosomatic Medicine, build on evidence【C6】______ a "positive emotional style" can help【C7】______ off the common cold and other illnesses.
Researchers believe the reasons may be both objective as in happiness【C8】______ immune function and subjective as in happy people being less【C9】______ by a scratchy throat or runny nose. "People with a positive emotional style. may have different immune【C10】______ to the virus," explained lead study author Dr Sheldon Cohen of Carnegie Mellon University in Pittsburgh. "And when they do get a cold, they may 【C11】______ their illness as being less severe."
Cohen and his colleagues had found in a【C12】______ study that happier people seemed less likely to catch a cold,【C13】______ some questions remained as to【C14】______the emotional trait itself had the effect.
For the new study, the researchers had 193 healthy adults with complete standard measures of personality traits, self-perceived health and emotional "style". Those who【C15】______ be happy, energetic and easy-going were judged【C16】______ having a positive emotional style,【C17】______ those who were often unhappy, tense and hostile had a negative style. The researchers gave them nasal drops【C18】______ either a cold virus or a particular flu virus. Over the next six days, the【C19】______ reported on any aches, pains, sneezing or congestion they had, while the researchers collected【C20】______ data, like daily mucus production. Cohen and his colleagues found that based on objective measures of nasal woes, happy people were less likely to develop a cold.
【C1】
A．Living
B．Staying
C．Pulling
D．Surviving
第8题
听力原文： Have you eaten too much over the holidays？ You should try fidgeting, or moving your hands or feet for a while. Those around you might not like it, but scratching and twitching is an important way of burning up calories.
American researchers have found that some people's squirming and wiggling equals several miles of jogging each day.
The scientists, based at the National Institute of Health's laboratory in Phoenix, Arizona, are studying why some people get fat and others stay slim.
In one study, 177 people each spent 24 hours in the institute's respiratory chamber—a room where the amount of energy people expend is measured by their oxygen and carbon dioxide levels. By the end of the day, some people had burned up 800 calories in toe-tapping, finger-drumming and other nervous habits. However, others had expended only 100 calories.
The researchers found that slim women fidget more than fat women, but there was net significant difference in men. Heavy people expend more energy when they fidget than do thin people.
(23)
A．Keeping moving hands and feet.
B．Jogging several miles.
C．Walking a long distance.
D．Taking deep breathes.
第9题
请回答（36）题__________.
第10题
Part Ⅱ Reading Comprehension (Skimming and Scanning)
Directions: In this part, you.viii have 15 minutes to go over the passage quickly and answer the questions on Answer Sheet 1. For questions 1-7, choose the best answer from the four choices marked A, B, C and D. For questions 8-10, complete the sentences with the information given in the passage.
HIV Vaccine Feat Leaves More Questions Than Answers
Only hours after HIV vaccine researchers announced the achievement of a milestone that has eluded them for a quarter of a century, they began plotting their next steps—and coming back to reality. Their ultimate goal, halting the spread of AIDS, remains far in the future. A Thai and American team had announced early Thursday in Bangkok that they had found a combination of vaccines that provided modest protection against infection with HIV, offering the first proof of principle that the deadly disease could be tamed by teaching the immune system to recognize the virus and defeat it. Scientists around the world hailed the achievement.
But by Thursday afternoon, the initial wave of joy had given way to the recognition that many questions will have to be answered before researchers can produce a vaccine that will reliably shield people from HIV. For starters, it could take years to figure out the biological mechanisms that produced the apparent 31 ~ reduction in infections among those given the vaccine treatment.
Researchers have never before observed antibodies (抗体) or other molecules in the blood that could block an infection of HIV, the virus that causes AIDS. Now they will try to figure out whether this combination of vaccines stimulated new molecules, or provoked an unusual blend of ones previously observed. Experts predicted that it would require 2 to 3 years of research to better understand how the vaccine worked, and an additional 5 to 10 years to produce a vaccine that was ready to test in people. Some researchers even wondered whether the apparent reduction in infections was simply a statistical mistake resulting from the small number of HIV cases observed in the trial.
The abundance of unanswered questions hasn't sapped the enthusiasm of many HIV researchers. After 26 years of seemingly futile research on vaccines, they have finally made some progress on demonstrating the feasibility of an HIV vaccine, said Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, which largely funded the $120-million study. "This is the first positive signal—modest though it may be—that we have ever got with any vaccine that we have ever tested in humans," Fauci said. But "is it a vaccine that is ready for prime time？ No."
The Thai trial, which began in 2003, had been laughed at by many critics as a waste of time and money because its two vaccines had produced no benefit in individual trials. But a few researchers speculated that using them together—with one vaccine priming (开始修复) the immune system and the second boosting that response—would be more effective. The primer in this combination is Alvac, made by Sanofi Pasteur, which uses a harmless virus to carry three synthetic HIV genes into the body. :The boost comes from Aidsvax, originally made by VaxGen Inc. and now owned by the nonprofit group Global Solutions for Infectious Diseases. It contains a genetically engineered version of a protein from the HIV surface.
The study, led by Dr. Supachai Rerks-Ngarm of the Thai Ministry of Public Health's Department of Disease Control, involved more than 16,000 volunteers in Thailand, all from the general population rather than from a pool of high-risk homosexuals and drug users used in past studies. Half received four priming doses of Alvac and two boost doses of Aidsvax over a six-month period; the other half received placebo (无效对照药) shots. After three years of follow-up, new HIV infections were observed
A．scientists have made certain achievements in HIV vaccine
B．HIV vaccine has been proved successful ultimately
C．HIV vaccine has been proved useless
D．HIV has already been decoded and defeated
