9. Increase in the level of high-density lipoprotein (HDL) in the human bloodstream lower bloodstream-cholesterol levels by increasing the body’s capacity to rid itself of excess cholesterol. Levels of HDL in the bloodstream of some individuals are significantly increased by a program of regular exercise and weight reduction.
Which of the following can be correctly inferred from the statement above?
A) Individuals who are underweight do not run any risk of developing high levels of cholesterol in the bloodstream.
B) Individuals who do not exercise regularly have a high risk of developing high levels of cholesterol in the bloodstream late in life.
C) Exercise and weight reduction are the most effective methods of lowering bloodstream cholesterol levels in humans.
D) A program of regular exercise and weight reduction lowers cholesterol levels in the bloodstream of some individuals.
E) Only regular exercise is necessary to decrease cholesterol level in the bloodstream of individuals of average weight.
10. Meteorite explosions in the Earth’s atmosphere as large as the one that destroyed forests in Siberia, with approximately the force of a twelve-megaton nuclear blast, occur about once a century. The response of highly automated systems controlled by complex computer programs to unexpected circumstances is unpredictable.
Which of the following conclusions can most properly be drawn, if the statements above are true, about a highly automated nuclear-missile defense system controlled by a complex computer program?
A) Within a century after its construction, the system would react inappropriately and might accidentally start a nuclear war.
B) The system would be destroyed if an explosion of a large meteorite occurred in the Earth’s atmosphere.
C) It would be impossible for the system to distinguish the explosion of a large meteorite from the explosion of a nuclear weapon.
D) Whether the system would respond inappropriately to the explosion of a large meteorite would depend on the location of the blast.
E) It is not certain what the system’s response to the explosion of a large meteorite would be, if its designers did not plan for such a contingency.
11. The cost of producing radios in the Country Q is ten percent less than the cost of producing radios in Country Y. Even after transportation fees and tariff charges are added, it is still cheaper for a company to import radios from Country Q to Country Y than to produce radios in Country Y.
The statement above, if true, best support which of the following assertions?
A) Labor costs in Country Q are ten percent below those in Country Y.
B) Importing radios from Country Q to Country Y will eliminate ten percent of the manufacturing jobs in Country Y.
C) The tariff on a radio imported from Country Q to Country Y is less than ten percent of the cost of manufacturing the radio in Country Y.
D) The fee for transporting a radio from Country Q to Country Y is more than ten percent of the cost of manufacturing the radio in Country Q.
E) It takes ten percent less time to manufacture a radio in Country Q than it does in Country Y.