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C. world population will grow at a rate faster than food production
D. food supplies will be too much available for world population
33. "Erosion" in the last sentence of the second paragraph probably means____
. A. "washing away" B. "taking away" C. "digging up" D. "picking up"
34. Which of the following statements is not true of Hydroponics?
A. Hydroponics is still too complicated and expensive for practical use
B. Hydroponics is considered a revolutionary method of agriculture.
C. Hydroponics has created wonders in agriculture.
D. Hydroponics has already been employed in food production.
35. Judging from the passage, the most important advantage of Hydroponics should be____.
A. higher yield B. Lower labor costs C. more automation D.less hard manual work
Questions 36 to 40 are based on the following passage:
36. With what topic is the passage primarily concerned?
A. The Wyoming Territory
B. The Fourteenth and Fifteenth Amendments
C. Blacks and women
D. Women's right to vote
37. According to the passage, why did women become active in politics?
A. To improve the conditions of life that existed at the time
B. To support Elizabeth Stanton for president
C. To be elected to public office
D. To amend the Declaration of Independence
38. What had occurred shortly after the Civil War?
A. Wyoming was admitted to the Union.
B. A women's voting law was introduced in Congress.
C. The eastern states resisted the end of the war.
D. Black people were granted the right to vote.
39. What does the Nineteenth Amendment guarantee?
A. Voting rights for blacks
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