—— We are organizing a party next Saturday, and I’d like you to come.

—— ________! I have another one that day. Thank you just the same.

A．Good luck

B．Sounds fantastic

C．Enough

D．What a pity

在310nm时，如果溶液的百分透射比是90%，在这一波长时的吸收值是（）。

A.1

B.0.1

C.0.9

D.0.05