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室温下汞的蒸汽压为0.0012mmHg柱,比安全浓度标准大100倍。
A . 正确
B . 错误
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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1处填上正确答案() 请在2处填上正确答案() 请在3处填上正确答案() 请在4处填上正确答案() 请在5处填上正确答案() 请在6处填上正确答案() 请在7处填上正确答案() 请在8处填上正确答案() 请在9处填上正确答案() 请在10处填上正确答案() 请在11处填上正确答案() 请在12处填上正确答案() 请在13处填上正确答案() 请在14处填上正确答案() 请在15处填上正确答案() 请在16处填上正确答案() 请在17处填上正确答案() 请在18处填上正确答案() 请在19处填上正确答案() 请在20处填上正确答案()
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