A We have learned enough ofit. B lt's a kind of virus with the highest fatality rate. C It claimed more lives ofits victims for its severity. D The vaccine efficacy was not high enough to control it.

A low efficacy vaccines can also help with vaccination accepted. B those who get vaccinated would not be infected. C the idea of herd immunity is a common sense. D many Americans are willing to get vaccinated.

A the public should try to enhance the efficacy of a vaccine. B effective vaccines should be used to control over it. C the public should make a quicker response to it. D emphasis should be laid more on vaccination than a vaccine efficacy.

A Take Flu Vaccination More Seriously B Develop Higher Efficacy Flu Vaccines C Receive More Vaccines D Tackle the Flu Outbreak

A she argues scientific findings sometimes are inadequate for policy making. B one of her book describes some political battles. C she replied to some basic scientific understanding. D her book includes colorful details ofcloud-seeding experiments.

A key figures can play the role of experts. B scientific findings indoor can surely extend to atmosphere. C scientific experiment is ahvays inconclusive. D mathematics and computer science can contribute to atmosphere control.

A Appreciative. B Ambivalent. C Critical. D Contemptuous.

A professionals should influence administration. B administration has authority over science. C administration ought not to lead science. D science and administration should be bound together.

A Skepticism on Policy-Ied Science B Frustration within Atmosphere Research C The Link between Science and Administration D Success in Weather Control

A can enlarge its market impact. B can get a rich return. C can reach a deal with Jump. D can offer better and convenient services.