shrimp_xia's notebook entry: Oct 15, 2010 I will have an exam tomorrow，it's about computer science，All the questions are in a book which has more than four hundred pages.I have read only half of it.I'm so nervous，as this is the second time I‘m trying to pass it.Just because the cost is very low，about 24 yuan（$4) a time.If it was 240,I think I will prepare better. good luck, God will bless me！