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可供口服的雌激素为（ ）。
Most people have no idea of the hard work and worry that gointothe collecting of those fascinating birds and animals that they pay to see in the zoo.One of the questions that is always asked of me is 1 I became an animal collector in the first 2.The answer is that I have always been interested in animals and zoos.According to my parents, the first word I was able to say with any 3 was not the conventional “mamma” or “daddy”,4 the word “zoo”, which I would 5 over and over again with a shrill 6 until someone, ingroupsto 7 me up, would take me to the zoo.When I 8 a little older, we lived in Greece and I had a great 9 of pets, ranging from owls to seahorses, and I spent all my spare time 10 the countryside in search of fresh specimens to 11 to my collection of pets.12 on I went for a year to the City Zoo, as a student 13 , to get experience of the large animals, such as lions, bears, bison and ostriches,14 were not easy to keep at home.When I left, I 15 had enough money of my own to be able to 16 my first trip and I have been going 17 ever since then.Though a collector's job is not an easy one and is full of 18 ,it is certainly a job which will appeal 19 all those who love animals and 20. 请在10处填上正确答案（）
达尔文进化和演化的思想一定程度上受到了（）的著作《地质学原理》影响。
患儿，12个月体重10kg，身长65cm，前囟近闭，乳牙7个，不会摆放积木。其中不正常的是（ ）。
调查人员将问卷分发给被访对象，由被访者在一定时间内填写，再由调查人员上门回收的调查方法是（）。
中国式管理的最高层级是（）
发电厂（）系统的各工作地点应有相互联系用的信号或通信设备。
下列哪种病变中没有肉芽组织的存在（ ）
关于现况调查的叙述，下列哪项是错误的（）
患者沈某患肠癌，对其进行手术治疗，手术中因医生误伤其动脉，患者需要输血，此时错误的说法是（）
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