I wandered lonely as a cloud
That floats on high o’er vales and hills,
When all at once I saw a crowd,

A host, of golden daffodils;
Beside the lake, beneath the trees,
Fluttering and dancing in the breeze.
Continuous as the stars that shineAnd twinkle on the milky way,
They stretched in never-ending lineAlong the margin of a bay:
Ten thousand saw I at a glance,
Tossing their heads in sprightly dance.
Questions:A. Who wrote this poem
B. What’s the title of this poem
C. What is the poem mainly about

从广义上讲，萃取过程包括液相到液相、固相到液相、气相到液相三种（）过程。

A、传热

B、传质

C、导热

D、相变