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Name five of the six points you should check,or have checked, when you are practicing your speech by recording it or with a f listening

What task did the surveyors do? a. they studied the landscape to determine the most direct route for building a road. b. they designed treadmills that lifted blocks of stone to where they were needed. c. they dug trenches and filled them with sand, concrete, and large blocks to form a road.

Aprimary source: a- may be biased b- is never biased c- cannot possibly have bias d- none of the above