听力原文:M: Ow ! That hurts !
W: What happened? Did you cut yourself?
M: Yes. On the edge of this paper. How can such a little cut hurt so much? I'm not even bleeding, but my finger really hurt.
W: You know, I read something about that. It turns out that a little cut on a finger can hurt a lot more than a big cut somewhere else.
M: Why? That doesn't make any sense.
W: Actually, it does. There are more nerve endings in your hands than almost anywhere else in the body, and it's the nerve endings that allow you to feel pain.
M: I guess that's tree.
W: Also, a little cut like yours won't damage the nerve endings, just irritate them. If they were damaged, you'd feel less pain, but the wound could be more serious.
M: So I suppose I should be happy my finger hurts so much, right?
W: Right. Now go get yourself a bandage.
M: Why? You just told me it's not serious.
W: It's not, but it does seem to be bothering you. Putting a bandage over the cut will keep the skin from drying and will help keep the skin together. If the skin stays together, the nerve endings won't be exposed, and the cut will hurt less.
How did the man cut himself?
A.With a knife.
B.On the edge of some metal.
C.On some glass.
D.On a piece of paper.
第1题
二尖瓣狭窄后,最先引起增大的心房、心室是
A.右心房增大
B.右心室增大
C.左心室增大
D.左心房增大
E.左心房室增大
第2题
二尖瓣狭窄后,最先引起下列哪个心房、心室增大
A.右心房增大
B.右心室增大
C.左心室增大
D.左心房增大
E.左心房室增大
第3题
二尖瓣狭窄,最先引起下列哪个心房、心室增大
A.右心房增大
B.右心室增大
C.左心室增大
D.左心房增大
E.左心房室增大
第6题
二尖瓣狭窄后,最先引起下列哪个心房、心室增大
A.右心房增大
B.右心室增大
C.左心室增大
D.左心房增大
E.左心房、左心室均增大
第9题
动脉导管未闭常引起
A.左心房、右心房、左心室增大
B.右心房、右心室、左心室增大
C.左心房、左心室增大
D.右心房、右心室增大
E.左心房、左心室、右心室增大
第10题
A.左心室增大为主,左心房、右心室增大
B.右心房、右心室增大为主
C.左心房、左心室增大,右心室也可增大
D.靴形心
E.右心室肥厚为主,右心房也可扩大
房间隔缺损
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