The 317.5km long Moscow Metro is the sixth longest subway system in the world. It is mostly underground, and serves the city of Moscow and the neighbouring towns Krasnogorsk and Reutov. State-owned enterprise Moskovsky Metropoliten owns and operates the metro system.
In prescriptive grammar, the topic sentence is the sentence in an expository paragraph which summarizes the main idea of that paragraph. It is usually the first sentence in a paragraph. Also known as a focus sentence, it encapsulates or organizes an entire paragraph. Although topic sentences may appear anywhere in a paragraph, in academic essays they often appear at the beginning. The topic sentence acts as a kind of summary, and offers the reader an insightful view of the writerâs main ideas for the following paragraph.
A paragraph with unity develops one, and only one, key controlling idea, to ensure unity, edit out any stray ideas that donât belong and fight the urge to take interesting but irrelevant side trips; they only create confusion about your destination. 4.1.2 The Topic Sentence. The topic sentence states the main idea of the paragraph. Think of the topic sentence as a rallying point, with all supporting sentences developing the idea it expresses. A good topic sentence helps you gauge what information belongs in a paragraph, thus ensuring unity.