1. Potassium has a valence of positive one because it usually loses one electron when ··· with other elements.(A) does it combine
(B) it combines
(C) in combining
(D) combination

2. The economic background of labor legislation will not be mentioned in this course, ... be treated.
(A) trade unionism will not
(B) nor trade unionism will
(C) nor will trade unionism
(D) neither trade unionism will

3. .... test positive for antibiotics when tanker trucks arrive at a milk processing plant, according to federal law, the entire truckload must be discarded.
(A) Should milk
(B) If milk
(C) If milk is
(D) Milk should

4. Located behind ... the two lacrimal glands. (A) each eyelid
(B) is each eyelid
(C) each eyelid are
(D) each eyelid which is

5. Only for a short period of time ... run at top speed.
(A) cheetahs
(B) do cheetahs
(C) that a cheetah can
(D) can

6. The wedges ... dart board are worth simple from one to twenty points each. roses.
(A) There are on a
(B) Are on a
(C) are they on a
(D) on a

7. Since an immediate change was needed on an emergency basis, ... by the governor to curtail railway expenditure.
(A) so it was proposed
(B) was proposed
(C) because of the proposal
(D) it was proposed

8. In the Morgan Library in New York City ... of medieval and Renaissance manuscripts.
(A) a collection is
(B) in a collection
(C) is a collection
(D) which is a collection

9. Some fishing fleets might not have been so inefficient in limiting their catch to target species ... More strict in enforcing penalties.
(A) the government had been
(B) if the government had
(C) had the government been
(D) if the government more

10. The Dewey Decimal System, currently used in libraries throughout the world, ... all written works into ten classes according to subject.
(A) dividing
(B) divides
(C) it would divide
(D) was divided

11. Individual differences in brain-wave activity may shed light on why some people are more prone to emotional stress disorders ....
(A) that others are
(B) and others are
(C) others are
(D) than are others

12. ... squeezed, the orange juice in a one-cup serving provides twice the minimum daily requirement for vitamin C.
(A) It is freshly
(B) If freshly
(C) You freshly
(D) If it freshly

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