In order to earn money for his family, it is necessary for him to get a job.

A．it is necessary to get a job

B．it is necessary to find a job

C．he must get a job

D．a job must be found

受检血浆凝血酶时间及蕲蛇酶时间皆延长则表明（）。

A.有肝素或类肝素物质存在

B.有FDP或异常纤维蛋白原存在

C.因子Ⅱ、Ⅴ缺乏

D.因子Ⅴ、Ⅶ、Ⅱ缺乏

E.因子Ⅴ、Ⅶ、Ⅹ缺乏