(A) From W to Z (B) From X to Y
(C) From X to Z (D) From Y to W
(E) From Z to W
22. If, in traveling from F to G, a vehicle passes through no intersection more than once, which of the following could be, but need not be, a portion of that trip?
(A) From F to W (B) From X to W
(C) From X to Z (D) From Y to X
(E) From Z to Y
23. It was long thought that a now-rare disease of the joints, alkaptonuria, was epidemic in Egypt 2,500 years ago. Evidence came from the high proportion of mummies from that period showing symptoms of the disease. Recently, however, chemical analyses of skeletons have led scientists to propose that the joint damage was actually caused by chemicals used by Egyptian embalmers.
Which of the following, if true, would additionally weaken the traditional view that alkaptonuria afflicted many Egyptians 2,500 years ago?
(A) X-rays of the mummies showed shadows that clearly suggested joint damage, and recent inspection of the skeletons has confirmed that hypothesis.
(B) Although alkaptonuria is a disease that can be inherited, it did not appear in the descendants of the Egyptian population in which the symptoms were found.
(C) Egyptian embalming methods were highly secret, and scientists are still not certain of the nature of some of the chemicals that were used.
(D) Possible evidence of alkaptonuria has been pointed out in pictures representing the human figure found on artifacts left by other Middle Eastern cultures of that period.
(E) Some mummies of that period show no evidence of joint damage at all.
24. The Census Bureau reported that the median family income, after adjustment for inflation, increased 1.6 percent in 1983. Poverty normally declines when family income goes up, but the national poverty rate remained at its highest level in eighteen years in 1983. The Census Bureau offered two possible expla- nations: the lingering effects of the deep and lengthy 1981-1982 recession, and increases in the number of people living in families headed by women and in the number of adults not living with any relatives. Both groups are likely to be poorer than the popula- tion as a whole.
Which of the following conclusions can be properly drawn from this report?
(A) The national poverty rate has increased steadily over the last eighteen years.
(B) The national poverty rate will increase when there are lingering effects of an earlier recession.
(C) The median family income can increase even though the family income of some subgroups within the population declines or fails to increase.
(D) The category of adults not living with any rela- tives is the most critical group in the determi- nation of whether the economy has improved.
(E) The median family income is affected more by changes in family patterns than by the extent of expansion or recession of the national economy.
25. For many people in the United States who are con- cerned about the cost of heating homes and busi- nesses, wood has become an alternative energy source to coal, oil, and gas. Nevertheless, wood will never supply more than a modest fraction of our continuing energy needs.
Which of the following, if true, does NOT support the claim made in the last sentence in the passage above?
(A) There are many competing uses for a finite supply of wood, and suppliers give the lum- ber and paper industries a higher priority than they give individual consumers.
(B) Wood produces thick smoke in burning, and its extensive use in densely populated cities would violate federal antipollution guidelines.
(C) There are relatively narrow limits to how far wood can be trucked before it becomes more economical to burn the gasoline used for transportation instead of the wood.
(D) Most apartment dwellers do not have adequate storage space for the amount of wood neces- sary to supply energy for heating.
(E) Most commercial users of energy are located within range of a wood supply, and two- thirds of United States homes are located outside of metropolitan areas.
No. 5-3 SECTION 6
Questions 1-5
A florist has exactly seven varieties of flowers- P, Q, R, S, T, U, and V-from which she must select combinations of exactly five varieties with which to make flower arrangements. Any combination of the five varieties that conforms to all of the following con- ditions is acceptable:
If P is used in an arrangement, T cannot be used in that arrangement.
If Q is used in an arrangement,
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