皮皮学，免费搜题
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【单选题】
关于胎儿附属物的叙述，正确的是A.
胎膜的外层是羊膜，胎膜的内层为绒毛膜
B.
胎盘由羊膜、绒毛膜及底蜕膜组成
C.
脐带表面被绒毛膜覆盖
D.
孕早期羊水主要来源于胎儿尿液
E.
绒毛膜是胎盘的主要部分，也是构成胎盘的母体部分
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举一反三
【单选题】If the first lot of shipment is found ___, we will place repeat orders with you.
A.
satisfactory
B.
satisfied
C.
satisfaction
D.
satisfying
【简答题】Talk about something of Africa American literature?
【简答题】IOT是指（）
【单选题】If the first lot is good in ____, we’d like to ____ a substantial order ___ you.
A.
quality, pay, with
B.
quantity, pay, with
C.
quality, place, with
D.
quantity, place, from
【单选题】听力原文：W: Good morning, class. Today I thought we would talk about something bright and cheerful—the sun. Can anyone tell me how you feel when it's sunny compared to how you feel when it's cloudy? M: I ...
A.
Lack of vitamins is the main cause of skin cancer.
B.
New research proves that sunbathing causes no problems at all.
C.
The danger of the sunshine has been ignored because of its benefits.
D.
Proper exposure to the sun can contribute a lot to our health.
【简答题】They usually t____ a walk and talk about something after dinner.
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