D. Substance containing virus used for protecting people against diseases. 相关知识点: 试题来源: 解析 D 解析:词义估量题。由第一段“美国疾病防控中心要求注射流感vaccine”和常识可推 测其含义为“疫苗”,再由第二段知它是被注入人体体内抗击疾病的,因此选D。 答案:D反馈 收藏 ...
Being a man has always been dangerous. There are about 105 males born for every 100 females, but this ratio drops to near balance at the age of maturity, and among 70-year-olds there are twice as many women as men. But the great universal of male mortality is being changed. Now, ...
Arguments in what could be called the “relational” feminist tradition maintain the doctrine of “equality in difference,” or equity as distinct for equality. They posit that biological distinctions between the sexes result in a necessary sexual division of labor in the family and throughout ...
According to the passage, which of the following is TRUE A. All Americans are persuaded not to get vaccinated this year.B. The big problem in innovating flu vaccine producing technique is how to grow virus in a new way.C. More flu vaccines can not be produced in a short, time because...
Which of the following is NOTan advantage of using mosquitoes as vaccine carriers? A. It ' s free of charge. B. It ' s convenient. C. It ' s more effective. D. It ' s unnoticeable. 相关知识点: 试题来源: 解析 C 反馈 收藏 ...
the Walter and Eliza Hall Institute in Melbourne say the disease has evolved to thwart the body’s natural defenses. Australian scientists at the institute,however,are optimistic that a vaccine can be created because people living in malaria hotspots eventually build up some immunity against the ...
Suddenly, Salk found himself awash in new insights, including the one that would lead to his successful polio vaccine. Salk was convinced he had drawn his inspiration from the contemplative setting. He came to believe so strongly in architecture’s ability to influence the mind that he teamed ...
Based on the passage, which of the following statements can best describe the side effects of vaccination? A. About 5 to 10 percent of children experience mild temporary side effects. B. Side effects of a flu vaccine will usually last for a very long period of time. C. If a child ...
The realization that colds can kill has renewed interest in finding vaccines and treatments. The trouble is that the common cold is caused not by one virus but by hundreds of different ones. This means a vaccine or drug that works against one of these viruses, or one family of viruses, ...
[A] Flu vaccines now mainly use egg-based technology.[B] A bird influenza has once circulated among humans.[C] Safety can be greatly improved with cell-culture vaccines.[D] Modern vaccine production methods are to replace egg-based methods....