12.
Pulling off a bandage is so unpleasant,and for certain patients,it's also dangerous.Babies and the elderly have weak skin,and pulling away bandages and medical tape can lead to serious injuries (傷害).In fact,each year,medical tape causes about 1.5
million injuries in the US alone.
"This is a problem that all doctors and nurses know well,"says Jeffrey Karp,a professor at Harvard Medical School."They are waiting for new inventions that will not cause injuries."That's why Karp and his lab are working on an improvement to make fewer injuries when bandages are removed.
Traditional medical tape is simply something sticky on a backing,but Karp's invention has a middle layer (層).This extra layer takes the most force of removing the tape,which avoids injuries.When it's time to pull away the bandage,it moves right off.All that's left is a small print that can be easily covered or simply rolled off the skin.
Karp's tape isn't his only invention in medical technology.He wrote an article about a surgical (外科) bandage that could hold fast wounded parts of an operation.Even better,this bandage disappears over time,meaning that doctors never have to go back to remove it.If Karp's pain-free bandages come into being as well as his earlier breakthrough,future patients will be much luckier.
53.When do usual bandages cause injuries to patients?B
A.When they are kept on.
B.When they are pulled off.
C.When they are put on.
D.When they are stuck hard.
54.How many layers are there in Karp's invention?C
A.One.
B.Two.
C.Three.
D.Four.
55.What is the greatest advantage of Karp's surgical bandage?A
A.It doesn't need to be pulled off.
B.It can hold fast wounded parts.
C.It makes operation much easier.
D.It can be used as people's skin.