以下骨盆测量中，哪项低于正常值
A. 髂棘间径25cm
B. 髂嵴间径28cm
C. 坐骨结节间径7.5cm
D. 骶耻外径20cm
E. 骶耻内径12.5cm
What do we learn from the man's response
A. He would like to talk it over with the woman.
B. He doesn't like to hear about the meeting at all.
C. He would like to be informed of the meeting.
D. He would rather not be told of the meetin
一对夫妇有常染色体隐性遗传病，夫妻为携带者，曾生育过一患儿，再生育患儿的预期危险率为
A. 1/2
B. 1/4
C. 1/8
D. 1/16
E. 以上均不对
夫患常染色体显性遗传病，妻正常，则子女预期危险率为：
A. 1/2
B. 1/4
C. 1/8
D. 1/16
E. 1/32
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