（书商）
One day a bookseller(书商)let a big box of books fall onhis foot.“Go to see the doctor，”said his wife.“No”,hesaid,“I’ll wait until thedoctor comes into the shop next
time.Then I’ll ask him about my foot.If you I go to see him,I’ll have to payhim.”
On the next day the doctor came into the shop for some books.When thebookseller was gettinghim ready,he told the doctor about his bagd foot.Thedoctor look at it.
“You must put that foot in hot water every night.Thenyou must put somthing on it,”said the deoctor.
He took out a piece of paper and wrote on it.“Buy thisand put it on the foot before you go to bed every night，”he said.
“Thank you,”said the bookseller.“And now,sir,here areyour books.”
“How much？”said the doctor.
“Two pounds.”
“Good,”said the doctor.“I shall not have to pay younothing.”
“Why？”asked the bookseller.
“I told you about your foot.I want two pounds forthat.If people come to my house,I ask them to pay one pound for a small thinglike that.But when I go to their houses,I
want two pounds.And i came here,didn’t I？”
一天一位书商被一大箱书砸到了脚。他妻子说：“去看医生吧。”他说“不，我要等医生下次到店里来，然后他帮我看脚。如果到他那里看，我就给付给他诊
金了。”
第二天医生到书店里来买书。书商把书找齐，然后把脚伤告诉了医生。医生给他看脚。
医生说：“你每晚要用热水泡脚，然后上药。他拿出一张纸写下药方，说：“买这种药，然后每晚睡前涂在脚上。”
书商说：“谢谢。那么，先生，这是您的书。”
医生问：“多少钱？”
“2英镑。”
“太好了，”医生说：“我就不用付您钱了。”
“为什么？”书商问道。
“我给你看了脚，收你两英镑。像那样的小伤，如果到我那里看我只收一英镑。但是要我出诊，就收两英镑。而我到你这里来给你看病了，不是吗？”

The doctor paid for the books.医生支付了买书。

A.one pound

B.two pounds

C.Nothing没有

D.Something