问题
单项选择题 A1/A2型题
对直肠、肛管静脉的描述，错误的是（）
A.痔内静脉通过直肠上静脉回流入门静脉
B.肛门静脉经阴部内静脉回流
C.直肠下静脉通过肠系膜下静脉回流入肝
D.痔内静脉扩张形成内痔
E.痔外静脉回流形成肛门静脉和直肠下静脉
答案
参考答案：C
解析：直肠下静脉通过髂内静脉回流入下腔静脉。
搜题请搜索小程序“爱下问搜题”
对直肠、肛管静脉的描述，错误的是（）
A.痔内静脉通过直肠上静脉回流入门静脉
B.肛门静脉经阴部内静脉回流
C.直肠下静脉通过肠系膜下静脉回流入肝
D.痔内静脉扩张形成内痔
E.痔外静脉回流形成肛门静脉和直肠下静脉
参考答案：C
解析：直肠下静脉通过髂内静脉回流入下腔静脉。
James’s New Bicycle James shook his money box again. Nothing! He carefully __1__ the coins that lay on the bed. $24.52 was all that he had. The bicycle he wanted was at least $90! __2__ on earth was he going to get the __3__ of the money? He knew that his friends all had bicycles. It was __4__ to hang around with people when you were the only one without wheels. He thought about what he could do. There was no __5__ asking his parents, for he knew they had no money to __6__. There was only one way to get the money, and that was to __7__ it. He would have to find a job. __8__ who would hire him and what could he do? He decided to ask Mr. Clay for advice, who usually had __9__ on most things. “Well, you can start right here,” said Mr. Clay. “My windows need cleaning and my car needs washing.” That was the __10__ of James’s odd-job business. For three months he worked every day after finishing his homework. He was amazed by the __11__ of jobs that people found for him to do. He took dogs and babies for walks, cleared out cupboards, and mended books. He lost count of the __12__ of cars he washed and windows he cleaned, but the __13__ increased and he knew that he would soon have __14__ for the bicycle he longed for. The day __15__ came when James counted his money and found $94.32. He __16__ no time and went down to the shop to pick up the bicycle he wanted. He rode __17__ home, looking forward to showing his new bicycle to his friends. It had been hard __18__ for the money, but James knew that he valued his bicycle far more __19__ he had bought it with his own money. He had __20__ what he thought was impossible, and that was worth even than the bicycle.
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