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[B] have found the basic building blocks of life
[C] have accomplished some genetic discovery during the past half-century
[D] are making a breakthrough in DNA
67. Collins and Anderson are cited in the text to indicate all the following EXCEPT that ______.
[A] time-consuming effort is needed to accomplish the detailed map of in human DNA
[B] human gene-therapy operations may be applied to the patients
[C] gene-therapy now is already generally used to the treatment and prevention of human diseases
[D] information about DNA may be used in the treatment and prevention of human diseases
68. The word “pirate” (line 2, paragraph 3) means______.
[A] one who robs at sea or plunders the land from the sea
[B] one who makes use of or reproduces the work of another without authorization
[C] to take (something) by piracy
[D] to make use of or reproduce (another’s work) without authorization
69. We can draw a conclusion from the text that_____.
[A] engineering a perfect human is not feasible for the time being
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