1) Because air is highly compressible, ____ to define a clear upper boundary of the atmosphere.

2) BASIC, the acronym for Beginner’s All-purpose Symbolic Instruction Code, is a high – level Instruction Code, is a high - level computer programming language______.

3) ____ Frances Perkins held the post of labor secretary for twelve years.

4) ___ at the turn of the century, the Minnesota State Capitol building is made of white granite and marble.

5) A stream of volcanic lava flows differently, -- on the sort of ground it flows over.

6) Until the ninth century, written words were not actually separated, _____ in some literary writing, dots or points were used to indicate divisions.

7) Nutritionists _____ goat milk to be rich, nourishing, and readily digested.

8) _____ conventional black ink costs newspapers about thirty cents a pound, most rub-resistant inks add at least ten cents more per pound to the bill.

9) John Lone’s physical grace and _____ age, sex, and culture make him an extraordinary performer.

10) Before _____ of synthetic dyes, yarns were often colored by dyes obtained from natural vegetable and mineral matter.

11) The operetta first _____ as a popular form of musical theater in the nineteenth century.

12) _____ complex organic catalysts originating in living cells.

13) In the eastern part of New Jersey _____ , a major shipping and manufacturing center.

14) Work in parapsychology, _____ , has attracted a relatively small number of scientists.

15) _____ , the constitution of the Cherokee Nation provided for a chief executive, a senate, and a house of representatives.