14. Although the huge ice masses ---- glaciers move slowly, they are a powerful erosive force in nature.
(A) call them
(B) are called
(C) to call
(D) called
15. The soybean contains vitamins, essential minerals, --- high percentage of protein.
(A) a
(B) and a
(C) since a
(D) of which a
16. A gene is a biological unit of information who directs the activity of a cell or organism during its
A B C D
lifetime.
17. The flowering of African American talent in literature, music, and art in the 1920’s in New York City
A B C
became to know as the Harlem Renaissance.
D
18. The symptoms of pneumonia, a lung infection, include high fever, chest pain, breathing difficult, and
A B C D
coughing.
19. The rapid grow of Boston during the mid-nineteenth century coincided with a large influx of
A B C
European immigrants.
D
20. In 1908 Olive Campbell started writing down folk songs by rural people in the southern Appalachian
A B &
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