腹部损伤“战时”的发病率为（）
A.1%～7%
B.2%～8%
C.3%～9%
D.4%～10%
E.5%～11%
参考答案：B
— I’m afraid that I may miss her at the airport.
— Don’t worry. She ______ a bunch of flowers at that time.
A．holds
B．will be holding
C．was holding
D．held
简述钻柱的功用。
