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【单选题】
下列哪项胎儿的附属物的描述是错误的A.
胎膜由平滑绒毛膜和羊膜组成 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
B.
脐带长平均约 50cm
C.
脐带是母儿间物质交换的通道
D.
妊足月时羊水量约 1500ml prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
E.
妊娠足月时羊水量约 800ml
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举一反三
【单选题】By 'waiting more than 2 hours to inform. a candidate how he or she did in an interview is an eternity' in Lines 2 - 3 of Paragraph 3, the author means ______.
A.
it' s boring for a candidate to wait more than 72 hours to know the result of an interview
B.
it's too long to keep a candidate waiting over 72 hours to know the result of the interview
C.
it's necessary for a candidate to wait 72 more hours because it takes time to make decisions
D.
it's outdated to inform. the candidates the result of the interview after more than 72 hours
【单选题】If you move，you must inform. us______the change of your address．
A.
with
B.
for
C.
in
D.
of
【单选题】By 'waiting more than 72 hours to inform. a candidate how he or she did in an interview is an eternity ' in Paragraph 3, the author means ______.
A.
it's boring for a candidate to wait more than 72 hours to know the result of an interview
B.
it's too long to keep a candidate waiting over 72 hours to know the result of the interview
C.
it's necessary for a candidate to wait 72 more hours because it takes time to make decisions
D.
it's outdated to inform. the candidates the result of the interview after more than 72 hours
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