What is the author's attitude toward some recent figures mentioned in Paragraph 3？
A. Optimistic.
B. Skeptical.
C. Worrisome.
D. Critical.
查看答案
The word "disparity" (Paragraph 2) may be replaced by ______.
A. difficulty
B. diversity
C. different
D. density
The second paragraph is mainly about ______.
A. the difficulties faced by young people in finding jobs
B. the gap between scientific and technical professionals and non-professionals
C. the difficult problems raised by rapid scientific advances
D. scientific research in the 21st century
The word "rejuvenated" (Paragraph 5) most probably means ______.
A. rescued
B. reactivated
C. recalled
D. regulated
The proper title for this passage should be ______.
A. Tomorrow's Tissue Factory
B. A Terrific Boon to Medicine
C. Human Cloning
D. Genetic Research
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