Until a century ago, bloodletting was used to treat many ailments. Dating back to before t

Until a century ago, bloodletting was used to treat many ailments. Dating back to before the time of Christ, the treatment involved letting a type of worm, called a leech, such blood from the patient. People believed that there were liquids called humors in the body and that these determined a person’s personality and heath. Bloodletting, they thought, restored a balance to these humors.
At the time, little was known of the working of the human body, but people did know that the same liquid, blood, flowed throughout everyone’s body. They knew it was a vital substance, for loss of any great amount of it meant certain death. Thus, they concluded that all diseases were carried in the bloodstream, and that if the body was relieved of bad blood, heath would return. Bloodletting, however, came to be used as a cure-all. Woman were bled to keep them from blushing while members of the clergy were bled to prevent them from thinking sinful and worldly thoughts.
From the 11th to the 18th centuries, barbers were the people to go to if you needed to be bled. This custom explains the significance of the traditional barber’s pole: the white stripes stand for bandages and the red stripe for blood.
1. This passage is concerned about .
healthy people and doctors B. bleeding as a cure-all
C. barbers of long ago D. leeches with special jobs to do
2. The red and white stripes on barber pole symbolize .
sin and redemption B. the bleeding form
C. women who are nurses D. humors in the body
3. Why is bloodletting no longer considered a cure-all?
Because more is known about the workings of the human body.
Because leeches were outlawed
Because barbers were too busy cutting hair.
Because today we know that blood is necessary for health
4. In the second paragraph, the word “Thus” could be replaced by the word .
A. When B. However C. If D. So
5. Ailments means .
A. cures B. women C. disease D. medicinesB

(答案→)B 解析：可联系答.案.网客服索取。

谢谢解答