题目内容
（请给出正确答案）
A、Endometrium in progestational phase
B、Zona pellucida
C、Syncytiotrophoblast
D、Cytotrophoblast
简答题官方参考答案
（由简答题聘请的专业题库老师提供的解答）
更多“Which of the following structures must degenerate for blastocyst implantation to occur？”相关的问题
A、It regards output as the goal of learning.
B、It promotes the output with the input.
C、It drives the input with the output.
D、无
A、荡秋千时，会荡秋千的人到最高点时站直，到最低点时蹲下，秋千会越荡越高； When playing on a Swing, the person who plays on a Swing will stand up straight at the highest point and squat down at the lowest point;
B、荡秋千时，会荡秋千的人到最高点时蹲下，到最低点时站直，秋千会越荡越高； When playing on a Swing, the person who plays on a Swing will crouch down at the highest point and stand up straight at the lowest point. The Swing will go higher and higher;
C、荡秋千时，不会荡秋千的人到最高点时站直，到最低点时蹲下，秋千会逐渐停止； In a Swing, those who can't Swing will stand up straight at the top and squat down at the bottom;
D、以上都不对； None of the above is true;
A、Non-adjusting events refer to favorable events in connection to condition existing on or before reporting date
B、Non-adjusting events provide further evidence for conditions existing at reporting date
C、Non-adjusting events provide further evidence for conditions existing at reporting date
D、Non-adjusting events needs no adjustments to financial statements and no disclosure in notes
A、1>2>4>3
B、1>2>3>4
C、3>1>2>4
D、2>1>4>3
A、Birth of one baby
B、Birth of four genetically different babies
C、Birth of four genetically identical babies
D、Birth of four grotesquely deformed babies
A、Sperm penetration of the corona radiata
B、Formation of a female pronucleus
C、Appearance of the blasrocyst
D、Completion of cleavage
A、Epiblaslt
B、Syncytiotrophoblast
C、Hypoblast
D、Extraembryonic somatic mesoderm
A、Syncytiotrophoblast and cytotrophoblast
B、Syncyrtiotrophoblast and endometrium
C、Exocoelomic membrane and syncytiotrophoblast
D、Exocoelomic membrane and cytotrophoblast
A、diffusion
B、yolk sac nourishment
C、reverse osmosis
D、fetal capillaries
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