The changes will have to be if they are to have any effect. 2. His encouragement me to car

选出应填入下面一段英语中______内的正确答案。

Although the bulk ofindustry resources and energies have focused on developing the fastest(1)or slickest(2), more and more mindshare is turning to the evolution of the computer interface. Advancements in the areas ofinput device,(3)processing and virtual reality could lead to fundamental changes in the way human and computer interact. The technological battlefield of the future will be adding layers between the user and the raw machine to make the(4)as invisible as possible.(5)represents the next evolutionary step for the interface.

供选择的答案：

(1) voice (2) microprocessor (3) GUI (4) workstation

(5) application software (6) operating system

(7) interface (8) DBMS (9) virtual reality (10) eye-tracking device

HAV感染后，机体仅获短暂免疫力。()

A.[抗－HAV IgG]

B.[抗-HAV IgM]

C.[抗－HAV IgA]

D.[抗－HAV IgD]

E.[抗－HAV IgE]

A.HAV和HEV

B.. HAV和HBV

C.HAV和HCV

D.HBV和HCV

E.HAV和HDV

A.抗HAV的IgA

B.抗HAV的IgG

C.抗HAV的IgM

D.抗HAV的IgD

E.抗HAV的IgE

甲型肝炎特异性早期诊断指标是

A、抗-HAV IgM

B、抗-HAV IgG

C、抗-HAV IgA

D、抗-HAV IgE

E、抗-HAV 总抗体抗-HAV IgM

A.HAV、HBV、HCV

B.HAV、HBV、HCV、HDV、HEV

C.HAV、HCV、HDV、HEV

D.HAV、HBV、HCV、HDV

A.抗HAV的IgA

B.抗HAV的IgG

C.抗HAV的IgM

D.抗HAV的IgD

E.抗HAV的IgE

A.HBV、HCV、HDV

B.HAV、HBV、HDV

C.HCV、HDV

D.HAV、HBV

E.HAV、HBV、HCV

A.HAV和HEV

B.HAV和HBV

C.HAV和HCV

D.HBV和HCV

E.HBV和HEV

HAV感染后，机体仅获短暂免疫力。()