比较革兰阳性菌与革兰阴性菌细胞壁结构的区别。

A. probably
B. reasonably
C. questionably
D. incidentally

A. hence
B. moreover
C. therefore
D. however

A. luxurious
B. attractive
C. painful
D. noticeable

A. adjusted
B. accustomed
C. free
D. easy