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20. The most worst economic reversal of the twentieth century, the Great Depression of the 1930‘s,
began in the United states and spread abroad.

21. Many narcotic plants and its products, such as nicotine, are effective in controlling insects.

22. In some occupations, the computer has already replaced the motor vehicle as the principal
conserve of time and laboring.

23. Farming becomes more expensive when farmers are forced to apply greater quantities of costly
fertilizers for to sustain yields.

24. The metaphors we use routinely are the means which by we describe our everyday experiences.

25. Scientists finding out that the universe is even larger and more complex than anyone has ever
imagined.

26. Because their properties differ from those of their constituents, proper alloys can great increase
the corrosion resistance of a metal.

27. The ability to retain a mental record of earlier experiences are referred to as ―memory‖.

28. The aging process is not entirely determined by heredity, but is influenced by different
environmental and social circumstances as good.

29. The waterwheel is a mechanism designed to harness energy from a source instead than animals.

30. If they are prepared skillfully, soybeans they can be appetizing as well as nutritious.

31. Studies of either vision and physical optics began almost as early as civilization itself.

(A) the virtues were praised
(B) praised the virtues
(C) she praised the virtues
(D) her praise of the virtues

2. Scientists think ---helps some tree to conserve water in the winter.
(A) when losing leaves
(B) leaves are lost
(C) that losing leaves
(D) the leaves losing

3. The ancient Hopewell people of North America probably cultivated corn and ---crops, but hunting
and gathering were still of critical importance in their economy.
(A) another
(B) the other‘s
(C) other
(D) other than

4. Lunar eclipses occur each time the Earth blocks the Sun‘s light from the Moon --- the Moon‘s full
phase.
(A) during
(B) whether
(C) in which
(D) whenever

5. --- all data into electronic pulses.
(A) The computer input unit changes
(B) Changing input, the computer unit
(C) Which changes the computer input unit
(D) Changes in the computer input units

(B) it possible
(C) it is possible
(D) that possible

11. Anarchism is a term describing a cluster of doctrines an attitudes --- principal uniting feature is the
belief that government is both harmful and unnecessary.
(A) and
(B) whose
(C) since
(D) for

12. After the great blizzard of 1888 in the northeastern United States, it took some --- the snow away
from their homes.
(A) days to shovel people several
(B) people several days to shovel
(C) several days people to shovel
(D) people to shovel several days

13. Probably no man had more effect on the daily lives of most people in the United States --- Henry
Ford a pioneer in automobile production.
(A) as was
(B) than was
(C) than did
(D) as did

14. In copper engravings and etchings --- caused by the edges of the plate is clearly visible on the
paper.
(A) the impression is
(B) if the impression
(C) impressions

24. The doctrine of eminent domain is based the legal tradition that all real property is subject to the
control of the state.

25. In a controversial eating guide entitled Are You Hungry? Jane Hirschmann and Lela
Zaphiropolous argue that children instinctively know what foods are good for selves.

26. Bats rely to their hearing to navigate and to find food at night.

27. Once an important port of entry for immigrants to the United States, Ellis Island recent reopened
its great hall as a museum of immigration.

28. Every year Colorado is visited by millions of tourists who come for a variety of reason.

29. The energy needed for animal grow is derived primarily from carbohydrates and fats. 30. Countries tend to specialize in the production and export of those goods and services that it can
produce relatively cheaply.

31. Antique auctions have become popular in the United States because a steadily increasing
awareness of the investment value of antiques.