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【单选题】
患者，女，25岁，已婚。平素月经规律，现停经54天，黄体酮试验无阴道出血。应首先考虑的是A.
月经后期
B.
子宫内膜结核
C.
早期妊娠
D.
卵巢早衰
E.
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反馈参考答案：
举一反三
【单选题】When bacterial replication introduces a mismatch into double stranded DNA, the mismatch repair system:
A.
changes both the parental strand and the newly synthesized strand
B.
corrects the mismatch by changing the newly synthesized unmethylated strand
C.
corrects the mismatch by changing the parental strand
D.
corrects the strand which is methylated
【简答题】错配修复(mismatch repair)
【单选题】A major source of conflict and war at present is the frequent mismatch between perceived __________ and actual state borders.
A.
sovereign states
B.
non-sovereign states
C.
failed states
D.
nations
【简答题】索福克勒斯的 ( 6 )被亚里士多德称为“十全十美的悲剧”。
【单选题】A mismatch exists between the school calendar and the realities of 20th-century family life because ____.
A.
parents want their children to be back home early
B.
the majority of parents now work away from home
C.
many kids have to help their parents at home with house chores
D.
children are kept at school for too long
【单选题】患者女性，51岁，因肝硬化肝性脑病住院，病人淡漠少言，常衣冠不整，反应迟钝。对此期患者的饮食护理应注意
A.
禁止从胃肠道补充蛋白质
B.
开始数天限制蛋白质在每天20g以内
C.
蛋白质应首选植物蛋白
D.
应多饮水，增加食物吸收
E.
可适当增加高脂肪食物的摄入，补充营养
【单选题】When there is a mismatch between job requirements and the skills of available workers, the resulting unemployment is called
A.
structural unemployment.
B.
frictional unemployment.
C.
cyclical unemployment.
D.
underemployment.
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