answer: activity record

1. Observation record The snail's body is soft, its tentacles will expand and contract, the top of its long tentacles has eyes, and it crawls slowly, so it will retract when it touches its body lightly?

2. Example: On the morning of October 1, I found that all the snails were huddled in their shells and thought they were dead. Later, I fed the snails with vegetable leaves, and slowly, all the snails came out to eat them. I also found that there are many black things like lines in the feeding box, and there are many, which are snail droppings. When I opened the feeding box, there was a terrible smell.

class exercises

multiple-choice questions.

（1）B

（2）A

（3）C