关于凝血酶时间测定及甲苯胺蓝纠正试验，下列哪项叙述不正确（）

A.凝血酶时间（TT）测定是体外提供凝血酶

B.纤维蛋白原量或质有异常可使TT延长

C.若循环抗凝血酶类物质存在，TT延长

D.甲苯胺蓝可中和肝素和肝素类抗凝物质

E.若TT时间延长被甲苯胺蓝纠正，不能确定存在肝素或类肝素物质

— What did your teacher say this morning?

— She asked me _____ this morning.[ ]

A. how did Tom come to school

B. why was Tom late for school

C. when Tom would get to school

D. what will Tom do at school