1. --- a major role in future planetary exploration.
(A)Robots will surely play
(B)Robots, which will surely play
(C)Because robots will surely be playing
(D)Surely robots, which will be playing

2. Unlike the owl, bats cannot see very well, but they do have---.
(A)it hears very well
(B)very good to hear
(C)tearing very well
(D)very good hearing

3.Comparatively few clues in the United Slates have competing newspapers today, a major change from 1900 --- more than two newspapers.
(A)because then most large cities having
(B)when did most large cities have
(C)then most large cities that had
(D)when most large cities had

4.Witch hazel extract, --- distilled from the bark and twigs of the witch hazel shrub, has been utilized in medicine.
(A) is
(B) when to be
(C)which is
(D)has been

5. --- touching in O. Henry's stories is the gallantry with which ordinary people struggle to maintain their dignity.
(A) Most is
(B) It mostly is
(C) Is it most
(D) What is most

6. The face of the Moon is changed by collisions with meteoroids, --- new craters to appear.
(A) cause
(B) causing
(C) caused
(D) have cause

7. Social scientists believe that --- from sounds such as grunts and barks made by early ancestors of human beings.
(A) the very slow development of language
(B) language developed very slowly
(C) language which,, was very slow to develop
(D) language, very slowly developing

8. --- substances include various forms of silica, pumice, and emery.
(A) Natural abrasives occur
(B) Abrasion occurs in natural
(C) Naturally occurring abrasive
(D) A natural occurrence of abrasion

9. --- in the upper part of their long1 thin legs all9w deer to run swiftly and jump far.
(A) Muscles are powerful
(B) There are powerful muscles
(C) The powerful muscles that
(D) Powerful muscles

10. Geophysicists have collaborated with archaeologists and anthropologists to study the magnetic properties of pottery and fireplaces at sites ----- by early humans.
(A) occupied
(B) occupying
(C) which occupy
(D) were occupied

11. --- technically proficient; it also explores psychological questions.
(A) Not only is Barbara Astman's artwork
(B) Not only Barbara Asiman's artwork
(C) Barbara Astman1s artwork,, which is not only
(D) Barbara Astman's artwork not only

12. Although Canada's Parliament can neither administer or enforce laws initiate policy, it does have the power to make laws and vote on the allocation of funds.
(A) not
(B) nor
(C) and
(D)either

13. Willa Cather considered her novel of life in nineteenth-century Nebraska, My Antonia,---
(A) was her best work
(B) her best work
(C) her best work it was
(D) being her best work

14.First designated in 1970, Earth Day has become an annual international event concerns about environmental issues such as pollution.
(A) dedicated to raising
(B) dedicated raising
(C) dedicates to raise
(D) that dedicates to raising

15. In 1992 Albert Gore, Jr., the son of a former United States senator, became Vice President of the United States.
(A) who was the forty-fifth
(B) and the forty-fifth
(C) the forty-fifth
(E) he was the forty-fifth

16. Although Christopher Columbus failed in his (A) original goal, the discoveries(B) hedid make were as(C) Important than the route to Asia he expected(D) to find.

17. Martha Graham, a (A)leading figure in modern dance, made she(B) debut in (C)1920 with(D) the Denishawn School.

18. In the United States, the federal government (A) is responsible to(B) regulating the working conditions(C) in factories(D).

19. Jupiter is(A) a gaseous planet with(B) an atmosphere composed most(C) of hydrogen and(D) helium.

20. Throughout her career(A) Georgia O'Keeffe paid(B) meticulous attention to her craft;her brushes were always(C) clean, her colors fresh and brightness(D)