What can we infer from the last paragraph？
A. Computer scientists are quit optimistic about the existing anti-virus programs.
B. Computer scientists are looking forward to the coming anti-virus programs.
Computer scientists consider the existing viruses not the really destructive ones.
D. Computer scientists regard the coming viruses as the really destructive ones.
【B2】
A. informed
B. paid
C. noted
D. surprised
The figures in the first paragraph are cited to show that now
A. college graduates are surplus.
B. college diplomas are necessary to go upward in the society.
C. college diplomas are requisite credentials for getting good jobs.
D. more and more young people in the U.S. go to college.
护士巡视病房时，发现唐先生躁动不安，不配合治疗，应（）
A. 使用镇静剂
B. 加床档保证安全
C. 加大吸氧浓度
D. 降低吸氧流量
E. 使用呼吸兴奋剂
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