一般混合膳食的食物热效应约增加基础代谢的（）。
A.10％
B.15％
C.20％
D.30％
E.25%
参考答案：A
My visit to your school is really an unforgettable experience, ________ I will treasure for ever.
A．that
B．one
C．it
D．what
Most of the fans felt rather disappointed at the concert. They said it could have been _______ organized.
A．badly
B．worse
C．well
D．better
