(B) Can hospital lighting be improved to promote the recovery of patients?
(C) How do deep-sea fish survive in total darkness?
(D) What are the inherited illnesses to which hamsters are subject?
(E) Are there plants that require specific periods of darkness in order to bloom?
3. Millions of identical copies of a plant can be produced using new tissue-culture and cloning techniques.If plant propagation by such methods in laboratories proves economical, each of the following, if true, represents a benefit of the new techniques to farmers EXCEPT:
(A) The techniques allow the development of superior strains to take place more rapidly, requiring fewer generations of plants grown to maturity.
(B) It is less difficult to care for plants that will grow at rates that do not vary widely.
(C) Plant diseases and pests, once they take hold, spread more rapidly among genetically uniform plants than among those with genetic variations.
(D) Mechanical harvesting of crops is less difficult if plants are more uniform in size.
(E) Special genetic traits can more easily be introduced into plant strains with the use of the new techniques.
4. Which of the following best completes the passage below?Sales campaigns aimed at the faltering personal computer market have strongly emphasized ease of use, called user-friendliness. This emphasis is oddly premature and irrelevant in the eyes of most potential buyers, who are trying to address the logically prior issue of whether______
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