(D) have ratified
9. The chemical composition of sandstone is the same as _______
(A) that of sand
(B) that sand is
(C) sand is that
(D) what of sand
10. Hydrofoils can exceed 75 miles per hour, as compared with conventional watercraft, whose maximum speeds ______ approach 50 miles per hour.
(A) are rarely
(B) rarely
(C) of rarely
(D) they rarely
11. It was novelist and poet ______in 1968 founded Jackson State University''s Institute for the Study of the History, Life, and Culture of Black People.
(A) Margaret Walker did
(B) Margaret Walker
(C) Margaret Walker who
(D) Margaret Walker and
12. Before the Europeans arrived, American Indians were using virgin copper _____ into ornaments, knives, and other artifacts.
(A) Which was hammering
(B) which hammered
(C) was hammered
(D) hammered
13. In western North America, _____form the Great Divide, which separates the areas from which waters flow either eastward to the Atlantic or westward to the Pacific.
(A) the Rocky Mountains
(B) where the Rocky Mountains
(C) the Rocky Mountains in which
(D) there are the Rocky Mountains
14. Some ecologists believe _____more than 50 percent of existing species will be lost in the next 100 years.
(A) because
(B) that