Four-stroke engines can be found in anything from automobiles to airplanes. Have you ever wondered how
one works? The following pages will discuss each stage in
the four-stroke process, from intake to exhaust, as well as
common engine types that fall under the category of four
stroke.
O A. A bridge paragraph
OB. A body paragraph
O C. The introduction paragraph
OD. The conclusion paragraph

its confident and professional

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explanation:

ian mortimer in his book "the time traveller's guide to elizabethan england" uses a narrative in his style, which successfully conveys a clear description of the life in england in the 16th century. he writes in second person, which makes it comfortable to reader and easy to understand, he captures the readers attention with views of the landscape, the streets, the people including rich and poor. he also depicts some cultural traits from how people behave, eat or what they wear. his descriptions range from the social, economical, the political power to the examples of the life of common people. it could be tell that this book is about social history rather than a   novel.