1. Essentially, a theory is an abstract, symbolic representation of __________reality.
(A) what it is conceived
(B) that is conceived
(C) what is conceived to be
(D) that is being conceived of
2. All of the plants now raised on farms have been developed from plants __________wild.
(A) once they grew
(B) they grew once
(C) that once grew
(D) once grew
3. __________relatively costly, the diesel engine is highly efficient and needs servicing infrequently.
(A) Even
(B) It is
(C) Even though
(D) There is
4. __________images out of clay, stone, and metal.
(A) The shaping of sculpture
(B) Sculpting the shapes
(C) To shape sculpture
(D) Sculptors shape
5. __________dates from the end of the eighteenth century.
(A) The modern circus
(B) That the modern circus
(C) While the modern circus
(D) The modern circus that