问题
名词解释
反刍过程
答案
参考答案：
含唾液的纤维质食物进入瘤胃经微生物发酵分解；存在于瘤胃和网胃的粗糙食物上浮，刺激瘤胃前庭和食道沟，引起逆呕反射，将粗糙食物逆行食道入口再次咀嚼，后再经瘤胃和网胃底部到达皱胃。
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反刍过程
参考答案：
含唾液的纤维质食物进入瘤胃经微生物发酵分解；存在于瘤胃和网胃的粗糙食物上浮，刺激瘤胃前庭和食道沟，引起逆呕反射，将粗糙食物逆行食道入口再次咀嚼，后再经瘤胃和网胃底部到达皱胃。
| 完形填空。 | |||
| There is a big 1 in our city. We can see 2 animals there. A /An 3 is the biggest animal on land (陆地). Many 4 are flying in the sky (天空). Some beautiful ducks are 5 in the river. Can you see a 6 too? It can swim fast and jump high in water. What are these in the trees? They are 7 . They like eating bananas. Oh, there's a tiger in the cage under the tree. It eats a lot of 8 every day. I like the 9 best because it lives only l0 China. | |||
| ( )1. A. library ( )2. A. a lot ( )3. A. elephant ( )4. A. dolphins ( )5. A. running ( )6. A. dolphin ( )7. A. birds ( )8. A. grass ( )9. A. tiger ( )10. A. in | B. park B. lot of B. tiger B. birds B. jumping B. cat B. monkeys B. leaves B. panda B. on | C. place C. many C. lion C. chickens C. swimming C. tiger C. cats C. meat C. lion C. at | D. zoo D. much D. bear D. ducks D. walking D. giraffe D. dogs D. vegetables D. koala D. with |