1. Crocodiles are not born female or male. Instead, the _ _ _ _ _ _ _ _ _ _ _ (皞怠涨) around the area determines their sex.
4. When crocodiles rest on river banks with their mouths open, they are cooling off themselves as they _ _ _ _ _ (瘚瘙) through their mouths.
Across:
2. As semiaquatic (�瘗湔ㄡ�) animals, crocodiles have _ _ _ _ _ _ (�頩潜) feet.
3. Though crocodiles have fierce looking teeth, they only use them for grasping their preys. To digest their food, they swallow stones that grind food inside their _ _ _ _ _ _ _ _ (�).
5. Though similar in appearances, alligators (�剖驳捧) and crocodiles belong to different _ _ _ _ _ _ _ _ (蝘). You can tell them apart by their mouth. Alligators have shorter and wider snouts (��曌驳�).