判断下列句子中哪一个表达最清晰简洁。

A、The most popular painting in the exhibit of works by local artists was done by a seventy-year-old woman, who painted an exquisite self-portrait of herself.

B、The most popular painting in the exhibit of works by local artists was an exquisite self-portrait of a seventy-year-old woman.

C、The most popular painting in the exhibit of works by local artists was done by a seventy-year-old woman, and it is her own exquisite self-portrait.

D、null

A、He is handsome in appearance and wealthy in possessions.

B、He is handsome, and he is also wealthy.

C、He is handsome and wealthy.

D、null

A、He moved astonishingly fast.

B、The rapidity with which he moved astonished us.

C、His movements astonished us with their rapidity.

D、null

A、He switched careers many times in his life, switching from accounting to painting, then eventually to medicine from that.

B、He switched careers many times in his life, first from accounting to painting,and eventually to medicine.

C、He switched careers many times in his life, switching from accounting to painting, and to medicine.

D、null

下列烯烃中哪一个最稳定？（）

A. A

B. B

C. C

D. D

A、P

B、Si

C、Cl

D、O

A、

B、

C、

D、

A.Moderato

B.Lento

C.Presto

D.Andante

A、

B、

C、

D、

B 香烟

C 水稻

D 汽车