Son: Dad, can you write with your eyes closed?

Dad: Yes, but it depends on what it says.

Son: Your name.

Dad: Of course.

Son: Then please sign my notebook.

2: 100 integral

Mom: How many points did you get in this exam?

Son: 100 points

Mom: How well you did in this exam!

Son: 48 points for Chinese and 52 points for math.