—Why do so many people love Prime Minister ( * * ) Wen Jiabao? 

—Because he likes working _______ the working people. [ ]

A. to

B. during

C. among

D. between

先心病只出现下半身紫绀、杵状指时，应考虑

A．动脉导管未闭
B．肺动脉狭窄
C．法洛四联征
D．室间隔缺损
E．房间隔缺损