债券回购的两种方式为质押式回购和抵押式回购。（）
参考答案：错
Jamaican Usain Bolt was reported ______the world record of 100m in 9.69 seconds, thus winning his first gold medal.
A．breaking
B．having broken
C．to be broken
D．to have broken
肝硬化病人肝功能失代偿期的典型表现是（）
A.食欲缺乏
B.恶心、呕吐
C.腹水
D.乏力
E.贫血
