Abstract Nouns, Uncountable Nouns, and Concrete Nouns

Gap-fill exercise

Using your knowledge of articles, decide whether you need to type 'the', 'a' or 'an' in the gaps provided in the following paragraphs.

When you have completed this task, press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble.
In science, [the, a, an] word, sensitivity has two specific meanings. In psychology, sensitivity refers to [the, a, an] attitude towards [the, a, an] person, place, thing or event. For example, research may refer to cultural sensitivity when [the, a, an] authors are describing how one group of people express their feelings towards another group. Of course, this term is not restricted to culture; sensitivity may be used to describe consumer attitudes when discussing why people buy certain products and not others. Interestingly, sensitivity is used in [the, a, an] basic sciences such as chemistry; chemists often write about chemical sensitivity.

However, [the, a, an] other main meaning of [the, a, an] term, sensitivity, comes from medical research. When scientists are determining [the, a, an] prevalence of [the, a, an] disease, they use sensitivity and specificity measures. Sensitivity, in this case, measures [the, a, an] probability that, if a person tests positive to [the, a, an] disease, he/she is actually sick with [the, a, an] disease. This is important in diseases such as bowel cancer, where [the, a, an] person might test positive to [the, a, an] cancer, but has no symptoms. Specificity, which is [the, a, an] probability that [the, a, an] person tests negative to [the, a, an] disease, is always provided with [the, a, an] sensitivity measure.