【单选题】两正常人生了一个 Turner 综合症和色盲的孩子,这色盲基因大概发源于 。
【单选题】When does a pilot say “ Make all lines fast”? ________
A.
The ship is about to be in position
B.
The ship is very close to the berth
D.
The ship is in position
【单选题】两个正常人生了一个有 Turner 综合症( XO )和色盲的孩子,这个色盲基因大概发源于