完成句子。

A: Good morning, Bob.

B: Good __1__ Miss Smith. How are you?

A: Very well, __2__ . And you?

B: __3__  fine, thank you.

A: What's that young man's__4__ .

B: __5__  name is Dick Johnson.

A: What is he?

B: He's __6__  English teacher.

A: __7__  __8__ is he?

B: He is twenty-one years old.

A: __9__  was he born?

B: He was born __10__  Hefei.

轴心受力构件用侧焊缝连接，侧焊缝有效截面上的剪应力沿焊缝长度方向的分布是（）

A.两头大中间小

B.两头小中间大

C.均匀分布

D.直线分布