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 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.
--- large amounts of vitamin E found in green leaves, such as lettuce, and in cereals, especially in wheat germ.
7.
A popular belief --- radio and television have homogenized the language of the United States.
8.
The astronomical unit is the average distance of the Earth from the Sun --- is the standard of distances in the Solar System.
9.
In 1952 Ernest Hemingway published The Old Man and the Sea, ---.
10.
Many birds have feathers----with their surroundings.
11.
Mosaic is the art of closely setting small, colored pieces, such as stone or glass, into a surface -----.
12.
--- that distinguish human beings from mother primates are related to the ability of people to stand upright and walk on two legs.
13.
The letters of Abigail Adams to her husband and future President, John, --- during the American Revolution, conveyed a vivid picture of the times
14.
The lenses in an optical microscope bend the light passing through a specimen to form an image of that specimen that is much larger --- actually viewed.
15.
Not only --- as a cooked dish the world over, but it is also used as the base of many other foods, condiments, and even beverages.
