NO I theink si not good
No . I am not
No I think is not good because I like study in book and always use computer is bad
for healthy
PPT direct display
agree with this opinion
blackboard虽好用 但不是每一个程都适用的 每天用电射太大
good
hao
hen hao .
it is fine for every class
no have
ok
simple and easy to use!
the system responding is not quickly
we should build a circle belongs to ourself,we can discuss acdemic problem