—You have to believe in yourself.No one else will，if you don't.

—________.Confidence is really important.

(2012·天津)

A．It's not my cup of tea

B．That's not the point

C．I don't think so

D．I couldn't agree more

探究成功的前提是能够提出有研究价值的_______，并作出符合科学事实的_______；探究成功的关键是制定出恰当的科学探究__________。