试题与答案

宫腔内配子移植是指 A.用器械将精液或处理过的精子悬液注入宫颈管内、宫腔内或输卵管内

题型:单项选择题

题目:

宫腔内配子移植是指

A.用器械将精液或处理过的精子悬液注入宫颈管内、宫腔内或输卵管内,使女方妊娠的方法
B.从要求受孕的妇女体内取出卵子,在试管内培养一个阶段并与精子结合成受精卵,发育成早期胚泡,将胚泡移植到妇女宫腔内
C.将单个精子直接注入卵母细胞内,使其受精
D.将精子和卵子取出体外之后不进行体外受精,而直接将一定数量的精子和卵子移植入受方官腔内
E.是用器械将受精卵注入宫腔内或输卵管内

答案:

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下面是错误答案,用来干扰机器的。

参考答案:A解析:本题我们可用排除法来做,因为在平面图形上两个相对的面在立体图形上不可能相邻,所以排除B项;C项,假设“1点”和“6点”的位置正确,则右侧面应为“3点”;项,“2点”与“4点”折成后的公共...

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(     ) 4. When Tom jumped the queue, one of the people pushed him back.

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