—Could you please tell _______________________?

—Sure. Though I am a little nervous, I would love to.

A．when we shall have the graduation ceremony

B．what are you going to say at the graduation ceremony

C．where will you hold the graduation ceremony

D．if you are going to give a speech at the graduation ceremony

“万绿丛中一点红”，容易引起人们的无意注意，这主要是由于刺激物具有( )

A．强度的特点
B．新异性的特点
C．变化的特点
D．对比的特点