Scientists working on a problem do not know and sometimes can&39;t even guess what the fin
At a scientific meeting, Professor Rontegen called this new ray "the unknown", the X-ray. (49) , and soon there were X-ray machines in all the big hospitals. The most obvious use for this discovery was to enable doctors to see exactly how a bone was fractured. Other uses came later. It was found that these rays could be used to destroy cancer cells, just as they destroyed the healthy cells of the doctors who first used the machines. (50) , and the lungs could be X-rayed to show if there was any tuberculosis present.
46
A. It was on this paper that the lights were shiningB. She was very surprised by this requestC. Now the bulb was completely coveredD. It was a great inventionE. Methods were found later by which ulcers in the stomach could be locatedF. Doctors quickly saw how this could be used
47
A. It was on this paper that the lights were shiningB. She was very surprised by this requestC. Now the bulb was completely coveredD. It was a great inventionE. Methods were found later by which ulcers in the stomach could be locatedF. Doctors quickly saw how this could be used
48
A. It was on this paper that the lights were shiningB. She was very surprised by this requestC. Now the bulb was completely coveredD. It was a great inventionE. Methods were found later by which ulcers in the stomach could be locatedF. Doctors quickly saw how this could be used
49
A. It was on this paper that the lights were shiningB. She was very surprised by this requestC. Now the bulb was completely coveredD. It was a great inventionE. Methods were found later by which ulcers in the stomach could be locatedF. Doctors quickly saw how this could be used
50
A. It was on this paper that the lights were shiningB. She was very surprised by this requestC. Now the bulb was completely coveredD. It was a great inventionE. Methods were found later by which ulcers in the stomach could be locatedF. Doctors quickly saw how this could be used
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