【单选题】

Despite the,Alzheimer’s researchers are stillabout the prospects for immunization, though most agree that more results are needed from humans for us to truly understand immunization’s effects.

A、advances… thrilled
B、obstacles … uncertain
C、setback… optimistic
D、publicity … divided
E、pessimism … unconvinced

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根据网考网移动考试中心的统计，该试题：

5%的考友选择了A选项

15%的考友选择了B选项

74%的考友选择了C选项

6%的考友选择了D选项

Despite the______,Alzheimer’s researchers are still______about the prospects for immunization, though most agree that more results are needed from humans for us to truly understand immunization’s effects.