This kind of flower is than that one. A. beautifulB. more beautifulC. most beautifulD. th

问题补充：

This kind of flower is than that one.

A. beautiful

B. more beautiful

C. most beautiful

D. the most beautiful

答案：

A. beautiful

(答案→)B. more beautiful

C. most beautiful

D. the most beautiful

解析：英语比较级表示在两个十五中进行对比，常和介词than连用。最高级表示在三个及三个以上十五中进行对比，后面多加比较范围。多音节形容词副词的比较级和最高级要借助于more和most来构成，本句中beautiful有三个音节，结合下文than that one可知前文用比较级形式。故选B。