The simple squamous epithelium can be seen in:()

A．By changing the order of words, the poem reaches symmetrical and very well-balanced sentence structure.
B．By changing the order of seasons, he shows the elapse of time
C．By changing the order of words, he criticizes the conformist life of residents in a pretty town.
D．With the playful and skillful use of word order, he criticizes the town which is too conventional without any originality, creativity, and freshness.