单项选择题
Professor Collins was（）of the latest developments in physics because he had been in hospital for several months.
A.unconscious B.negative C.robbed D.ignorant
单项选择题 The old man did not seem to attach any importance（）the question.
单项选择题 There is need to check the（）of the report.
单项选择题 Her pulse was so weak that the doctor had difficulty（）it.
