听材料，回答问题。
（1）What can computers do at school？
A.They can help students read and write.
B.They can tell students how to play chess.
C.They can play basketball with students.
（2）What is the computer Big Blue good at？
A.Doing Maths problems.
B.Playing chess.
C.Remembering the prices.
（3）What does the speaker mainly tell us？
A.Computers can do many things.
B.Computers cost much.
C.Computers have changed a lot.