"That's funny!These fellows in the middle of the plate have died，" Dr Alexander Fleming was talking to another doctor in a laboratory in London．He had been studying some germs （細菌）that he was growing on a plate．They were very dangerous germs because they caused different kinds of illnesses that could kill people．Dr Fleming found that a mould（霉菌） had floated in through the window landing on the plate．It had killed some of the germs it had touched．
   "This certainly looks promising，" Fleming said．"We must grow some of this mould to see if it will kill other germs．"
   He named the strange mould "penicillin"．It proved to be a killer of many germs．Fifty mice were given deadly germs and then half of them were injected （注射）with penicillin．The twenty-five untreated mice died，but twenty-four of those that had been treated with penicillin lived．Dr Fleming wrote a report about what he had found out．Hardly anybody took any notice of it．
   In 1938 Dr Howard Florey，an Australian working in London，read Dr Fleming's report and was very interested．He found that penicillin was effective in treating blood poisoning in human beings．
   When World War II broke out，it was not possible to make enough penicillin in England．Dr Florey went to America where he helped to have enormous amounts of this wonderful drug made．It saved the lives of thousands of soldiers，sailors and airmen who would have died from their wounds if the hospitals had not had penicillin．

（1）Dr Alexander Fleming

C

C

．
A．had been studying a mould which was very dangerous and could kill people
B．had been studying some of the germs on a plate which could cure illnesses
C．had been making experiments on some germs that he was growing on a plate
D．had been making experiments on different germs that could help sick people to get better
（2）The reason why the twenty-five mice died was that

D

D

．
A．they had been given deadly germs and had been injected with penicillin
B．they were almost dead ahead of the experiment
C．they were easy to die in the experiment
D．they had been given deadly germs and had not been injected with penicillin
（3）In 1938，an Australian working in London named Howard Florey read Dr Fleming's report and

C

C

．
A．left England for America，making the drug
B．went to America to save the lives of thousands of soldiers，sailors and airmen
C．found penicillin effective in treating blood poisoning in human beings
D．went to America to make this drug for mice
（4）The underlined word "enormous" means "

D

D

"．
A．rest
B．appropriate
C．little
D．huge