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There is a big risk of getting infected during open-mouth kissing.
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Most people have no idea of the hard work and worry about going into collection 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【C1】______I became an animal collector in the first【C2】______. 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【C3】______was not the conventional "mamma" or "daddy",【C4】______the word "zoo", which I would【C5】______over and over again with a shrill【C6】______until someone, in order to【C7】______me up, would take me to the zoo. When I grow a little older, we lived in Greece and I had a great【C8】______of pets,【C9】______from owls to seahorses, and I spent all my spare time【C10】______the countryside in search of fresh specimens to【C11】______to my collection of pets.【C12】______on I went for a year to the City Zoo, as a student【C13】______, to get experience of the large animals, such as lions, bears and ostriches,【C14】______were not easy to keep at home. When I left, I【C15】______had enough money of my own to be able to【C16】______my First trip and I have been going【C17】______ever since then. Though a collector' s job is not an easy one and is full of【C18】______, it is certainly a job which will appeal【C19】______all those who love animals and【C20】______.
【C1】
听力原文：W: I certainly hope that this film is worthwhile. My feel are freezing, and I can't stand it much longer.
M: I hate standing in line anyway. If we don't get in soon, let's just forget it and go somewhere else.
Q: Where are the man and woman at this moment？
(13)
B: Yes, Professor Smith. We did.
S: Who's your lab partner, Bob？
B: Anne Wilson.
S: Well, Anne, can you and Bob go over the procedure for the class？
A: Sure. Firs(we put ten grams of crushed limestone in a bottle.
S: Anything special about the bottle？
B: It was a gas - collecting bottle with a one - hole stopper and bent glass tubing.
S: Very good. So you put the limestone in a gas - collecting bottle. Then what？
A: Then we poured in ten milligrams of hydrochloric acid, put on the stopper, and collected a bottle of carbon dioxide.
S: Right, What was the method of collection？
A: Water displacement.
S: Good.
A: Then, we lit a magnesium ribbon and put it in the bottle or carbon dioxide.
B: And carbon deposits began to form. on the bottom of the bottle, You see, we didn't have any problem with procedure.
A: Well, we had a little problem getting the magnesium ribbon to stay lit until we could get it into the bottle.
B: Okay. But we did it. The big problem was that we really didn't understand what happened. Did the magnesium combine with the oxygen in the carbon dioxide？
S: You have just answered your own question, Bob. The burning magnesium broke the carbon - oxygen bonds in the carbon dioxide, and then the oxygen combined with the magnesium to produce magnesium oxide.
A: And the carbon was freed to deposit itself on the bottle.
S: Exactly.
(23)
Whole-grain cereals and high-fiber breads ale examples that manufacturers meet consumers'
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