
关于骨盆径线,下述哪项错误()。
A.髂棘间径是两髂前上棘外缘的距离
B.骶耻外径<18cm时有可能骨盆入口狭窄
C.坐骨结节间径<8cm,表示骨盆出口狭窄
D.对角径长度减去1.5~2cm,即为骨盆入口前后径长度
E.耻骨弓角度小于80°不正常


A.髂棘间径是两髂前上棘外缘的距离
B.骶耻外径<18cm时有可能骨盆入口狭窄
C.坐骨结节间径<8cm,表示骨盆出口狭窄
D.对角径长度减去1.5~2cm,即为骨盆入口前后径长度
E.耻骨弓角度小于80°不正常
Directions: Read the text Deaf DJ, and choose proper answer to each of the following questions.
I was born in England with perfect hearing. In 1990, when I was five, my family moved to the United States. I started getting ear infections every three months or so. We didn't have health insurance at the time and when I got a third infection, my parents couldn't pay for the treatment. I went deaf in my right ear and was left with 20 percent hearing in my left.
There was always music on in my house when I was little, because my dad was a DJ, and he played all kinds of music. When I grew up, I was hooked on deejaying (播放音乐) . I wanted to learn more.
I e-mailed DJ Shiftee, a well-known New York City DJ:“I know you like a challenge. How about teaching a deaf person to deejay?” He wrote back the next day: “Challenge accepted." He tutored me twice a week for two years, helping me develop correct technique. I practiced four hours a day. Now when I'm performing, muscle memory takes over.
When I started, I wouldn't tell the club managers I was deaf. I would just show up, introduce myself, and start playing music. At the end of the night ,they were always so surprised that I couldn't hear. Sometimes I would bring doctors ‘notes because they wouldn't believe me. It was what I wanted: they were giving me the chance to play because I was good, not out of sympathy.
For a show, I set up one speaker facing my left side, my good ear. The speakers that play the bass(低音) are on the floor behind me so I can hear some of the lower frequencies and feel the beat in my feet.
I use software that turns the music into lines of color on a computer screen. For example, red is the bass, and green is the melody(主旋律) .I'm visually hearing the music. What I love about deejaying is the creativity, what you can do with a machine, two turntables, and a mixer.
I go to elementary schools for the deaf and talk to the students about motivation and believing in themselves. I'm big on talking to the parents. Many parents nearly give up their deaf Jcids, but I always tell them ,“My advice to you is to let [your kids] chase their dreams, I'm a deaf DJ, so why not?”
1. The author became nearly deaf .