去年爆出的丰田“刹车门”事件让小明对刹车时的情景有了更多的思考。下列想法正确的是

A．一辆车在下坡时若刹车失灵，在不增加动力的情况下，此车的运动状态将保持不变

B．有人错把油门当刹车踩，会导致汽车的惯性变大

C．司机看到意外时刹车，反射活动的途径是：

眼睛传入神经脊髓传出神经腿部肌肉

D．万一下坡时刹车失灵可试图将车一侧靠着山体摩擦产生阻力而减速，这是通过做功把机械能转换为其他形式的能

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20处填上正确答案（）

A.excursion

B.travel

C.journey

D.Trip