阅读对话,回答问题。 Worker: Welcome to our factory, children! These machines make crisps. Amy: What does this machine do, sir? Worker: It washes the potatoes. Sam: Look! This machine cuts the potatoes. Worker: Don't touch the machines, please! They are dangerous. Sam: Sorry, sir. Worker: This machine puts the crisps in the bags. Wait! You are a very good class. You can each have a bag of crisps. All: Oh, thank you, sir!
Where are the children visiting?
What do these machines make?
Can you touch the machines?
What can the class have?
Are the machines dangerous?