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great civilizations. (3) The pyramids of Egypt are an example of what became possible once
there were lavish copper tools. (4) Each block of stone in each pyramid was extracted from
a mine and individually hand-carved using copper chisels. (5) It is estimated that ten
thousand tons of copper ore were mined throughout ancient Egypt to create the three
hundred thousand chisels needed. (6) It was an enormous achievement, without which the
pyramids could not have been built, however many slaves were used, since it is not practical
to carve rock without metal tools. (7) It is all the more impressive given that copper is not
the ideal material for cutting rock since it is not very hard. (8) Sculpting a piece of limestone
with a copper chisel quickly blunts the chisel. (9) It is estimated that the copper chisels
would have needed to be sharpened every few hammer blows in order for them to be useful.
How should sentence 2 be changed? *
A Change a to an
OB Insert a comma after technology
OC Change of to in
D Delete the comma after cities
How can the author improve the clarity of sentence 3? *
OA Delete of Egypt
OB Change example to specimen
OC Change possible to imaginable
D Change lavish to plentiful
5 points
6 points