题目内容
软体动物的消化腺包括唾液腺和消化盲囊，所以可以完全进行胞外消化。
查看答案
搜索结果不匹配？点我反馈
更多问题
软体动物的真体腔较发达，围心腔及生殖腺和排泄器官的内腔都是真体腔所在的部分。
软体动物的鳃来源于外胚层。
乌贼的神经系统发达。
Choose the right adjectives from the list and complete the following sentences. (一词只用一次)ambitious cheerful clever flexible generous hardworking insensitivelazy mean punctual sensitive shy unreliable1. She has never bought me a drink. She is______.2. My sister is always making people angry or upset, because she just doesn’t consider their feelings. She is______.3. They are always on time. They are______. 4. He is lawyers aware of what other people think or feel. He is ______. 5. Tom always shares his toys with his friends. He is ______. 6. They work all the time. They are ______. 7. He never makes his bed or tidies his room. he is very ______. 8. He often promises to do things but then he forgets. He is ______. 9. She likes to smile and be happy. She is ______. 10. My best friend always gets the best grades at school. He is very ________. 11. He would like to become a doctor. He is very _______. 12. He could work in any of the departments. He is ______. 13. Betty hasn't got a boyfriend because she is too ______.
微信支付 
支付宝支付