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【单选题】
根据胎盘屏障结构胎盘可分为四类,牛、羊妊娠后期的胎盘属于( )
A.
上皮绒毛膜胎盘
B.
内皮绒毛膜胎盘
C.
血绒毛膜胎盘
D.
结缔组织绒毛膜胎盘
E.
子叶胎盘
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参考答案:
举一反三
【简答题】After six months of living in New Zealand, I realized one thing. Despite my 36 for greater contact with local students, 37 I initiated(开始) the contact, it wouldn’t happen. Local students are not inter...
【判断题】肺炎确诊患者的粪便中检测出 2019-nCoV 核酸,说明可能存在粪 - 口传播途径。
A.
正确
B.
错误
【单选题】妈妈要求小华必须完成作业后才能看动画片。这种做法符合( )。【2014年下半年真题】
A.
负强化原则
B.
替代强化原则
C.
自我强化原则
D.
普雷马克原则
【单选题】下面不属于有氧运动的是哪个?
A.
骑自行车
B.
短跑
C.
跳绳
D.
慢跑
【简答题】I’m Monty Don. Though I’m a host and writer now, I had an unhappy study experience actually. I changed 36 many times. I first went to school at five. None of my teachers or classmates liked me because...
【单选题】下面哪个运动不属于有氧运动?
A.
游泳
B.
自行车
C.
有氧健身操
D.
举重
【简答题】For the last 30 years, I have had violent physical reactions to certain noises. Everyday sounds make me want to hide, scream and put my fingers in my 36 . I feel unreasonable 37 to people about these ...
【简答题】A few weeks ago, our dog, which we had kept for more than ten years, had to be put down. First, a tumor on her stomach got worse, and she was very 36 . Then, the pain in her back got so bad that somet...
【简答题】第二节:完形填空(共20小题;每小题1.5分,共30分) 阅读下面短文,掌握其大意,然后从36---55各题后的 A B C D四个选项中选出可以填入空白处的最佳选项。 A gift left to her Early in the morning, I was taken in a nylon bag into a truck. I felt horrible as well as ___36_...
【单选题】阅读下面短文,从短文后各题所给的四个选项(A、B、C、和D)中,选出可以填入空白处的最佳选项, After spending a weekend away with my adult son, I was so impressed by his generous heart that I sent him this letter. Dear son, I want to thank you for...
A.
humorous
B.
private
C.
reasonable
D.
valuable
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