According to the passage, in WHICH area improvement is already under way

单项选择题Which of the following conclusion drawn from the passage is NOT true

单项选择题Who does the word Stakhanovites refer to according to the passage

单项选择题Crippen was absent from the DNB ______.

单项选择题The writer suggests that there is no sense in buying the latest volume ______.

单项选择题Throughout the passage, the writer' s tone towards the DNB was ______.