女性，28岁。不慎从高处跌落，半小时后急送医院。查体：神志清、腹痛、右大腿畸形伴疼痛。

首先应进行哪方面检查（）

A.右股部有无反常活动

B.右股部有无骨擦音或骨擦感

C.生命体征的检查

D.诊断性腹腔穿刺

E.检查胫前、后动脉的搏动情况

An analyst does research about calculating reinvestment income to achieve desired yield. An 8 percent coupon bond with seven years to maturity makes semiannual interest payment and has a maturity value of $1000. The bond is currently selling at $1112.96 to provide a 6 percent yield. The amount of reinvestment income required to generate this yield is closest to:（）

A. $110.48

B. $123.45

C. $226.44