London—coffee protects mice from radiation and could get the same way in humans, according

London—coffee protects mice from radiation and could get the same way in humans, according to Indian scientists.
Scientist at India’s Bhabha Atomic Research Center discovered that mice injected with caffeine (咖啡因)remained alive after high doses(剂量)of normally lethal radiation.
Although the study was limited to animals, Kachadillilli George, head of the research team, believes the findings could have implications (something suggested )  for humans .
“It does suggest that coffee might have some beneficial effects in protecting against radiation,” he told New Scientist magazine late last month.
George and his team injected 471 mice with caffeine and left them uncovered to 7.5 grays of gamma radiation(伽玛射线),enough to kill most mice. But 25 days later 70 percent of the mice that had received 80 milligrams(毫克)of caffeine per kilogram of body weight were still alive.
On the contrary all 196 mice that had been left uncovered to the same radiation but had not been given any caffeine died.
【小题1】George and his team drew the conclusion from    .A．the magazineB．their inventionC．the experimentD．their experience【小题2】From the news, we know    can be protected from radiation.A．both mice and humansB．only miceC．only humansD．neither humans nor mice【小题3】From paragraph 5, we know 30 percent of the mice died 25 days later. The reason was probably that    .A．these mice had been given only 80 milligrams of caffeineB．these mice hadn’t been injected with caffeineC．these mice were very big and strongD．these mice hadn’t been given enough caffeine【小题4】Which is the best title of the article?A．Human and MiceB．New Radiation Defense—CoffeeC．Deadly Radiation—Gamma RadiationD．Mice Died of Caffeine【小题5】In paragraph 2,the underlined word “ lethal ”means    .A．causing deathB．livelyC．excitingD．richC