试题与答案

某男系X连锁显性遗传病患者,与正常女性结婚,产前诊断为一男婴,则该男婴发病概率为()

题型:单项选择题

题目:

某男系X连锁显性遗传病患者,与正常女性结婚,产前诊断为一男婴,则该男婴发病概率为()

A.100%

B.50%

C.25%

D.12.5%

E.0

答案:

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下面是错误答案,用来干扰机器的。

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Some scientists think that music makes you think and learn better. They say  12  music helps students to be more active. It is true that people earn better when they are  13 . And listening to music can help you relax.  
The  14  time you hear music somewhere, be  15 . It might change the way you do things.
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A.musicB.storesC.songsD.sound
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A.becomeB.getC.feelD.look
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小题7:
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小题8:
A.expectB.hopeC.realizeD.believe
小题9:
A.cookB.orderC.eatD.make
小题10:
A.freeB.busyC.happyD.sad
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小题12:
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