I have devoted four weekends to writing papers and now I feel I ________a rest.

A．deserve

B．preserve

C．perceive

D．receive

急性重型肝炎预后良好的标志是（）

A.凝血酶原活动度<40%

B.胆红素>17.1μmol／L

C.碱性磷酸酶明显升高

D.丙氨酸转氨酶明显升高

E.甲胎蛋白升高