Headache

I'm having mild headache now. I'm tried to do the Biology Tutorial but it was extremely complicated so I gave up after doing a few questions. Dominant and recessive genes make my head spin.

I'll study Maths tomorrow. I don't think my brain can take it anyway. For now, I'll be reading Physics' Radioactivity. It's something similar to Form 5's radioactivity. I need to learn this chapter before the test on Wednesday although he just taught us today. What cruelty and a sadistic sense of humor.