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1. The ancestors of the horse lived _________ and were about half a meter tall.
(A) years ago 60 million
(B) 60 million years ago
(C) ago 60 million years
(D) million years ago 60
2. The museum on Ellis Island, a former immigration station, contains documents and artifacts_________ to four centuries of United States immigration.
(A) related them
(B) related
(C) related that
(D) be related
3. _________, particularly the oxides of sulfur, greatly increases the rate at which rust forms.
(A) The presence of air pollutants
(B) Air pollutants are present
(C) Because the presence of air pollutants
(D) Air pollutants whose presence
4. The Sun, the Moon, and Earth have magnetic fields, and_________ evidence that the stellar that extend through vast regions galaxies have fields of space.
(A) which is
(B) is
(C) because
(D) There is
5. The “confederation school” poets of nineteenth-century Canada were primarily nature poets, _________ a wealth of eulogies to Canadian rural life.
(A) and producing
(B) who they produced
(C) producing
(D) whose production of
6. Since prehistoric people first applied natural pigments to cave walls, _________ have painted to express themselves.
(A) when artists
(B) artists
(C) artists who
(D) that artists
7. About 42 million bushels of oats are used annually _________ manufacture of breakfast foods in die United States.
(A) the
(B) is the
(C) in the
(D) to
8. Any acid can, in principle, neutralize any base, although _________ between some of the more reactive compounds.
(A) side reactions can occur
(B) the occurrence of side reactions can
(C) can side reactions occur
(D) side reactions that can occur
9. Just over two-thirds of Earth’s surface is covered by wafer, _________ more than 98 percent of this water is contained in the oceans.
(A) with
(B) which
(C) and
(D) resulting
l0. Pleasing to look at and touch, beads come in shapes, colors, and materials _________.to handle and to sort them.
(A) that almost compel one
(B) one compels
(C) that compel almost
(D) one is almost compelled
11. In 1978 the united States National Air and Space Administration selected Sally Ride _________.the first woman astronaut.
(A) who being
(B) to be
(C) and being
(D) was
12. Adhesions are _________ formed within the body in response to inflammation or injury.
(A) that thin bands of scar tissue
(B) they thin bands of scar tissue when
(C) thin bands of scar tissue
(D) thin bands of scar tissue able to
13. The planet Neptune is about 30 times _________ from the Sun as Earth is.
(A) far
(B) as far
(C) more far
(D) far that | 
