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单选题

With so many potential problems perhaps cloning research should be banned. “But this is not a technique _31_ for reproductive purposes,” argues Robert G. Mckinnell, professor of genetics and cell biology at the University of Minnesota. “It is a tool for achieving a new _32_ of biology at the most fundamental level.” Adds Beatrice Mintz, “Our _33_ is not to clone a human being, but to cure human disease.”
Already biologists studying the cell’s inner _34_ and the various methods of cloning have made discoveries that may _35_ lead to breakthroughs in the fight against cancer, _36_ of the aging process, and the conquest of more than 100 presently _37_ human genetic diseases. Cloning may also _38_ new strains of livestock. At Yale, _39_, Market is working toward the cloning of such animals as cattle and pigs.
To _40_ cloning-related research would mean closing the door to an important area of knowledge. To continue to _41_ the secrets of the cell, _42_, is perhaps to uncover the secret of human cloning. And _43_ the nature of man, if it can be done it will be done, what then is the answer?
Says Congressman Rogers, “It is clear that human cloning is _44_ possible. The day when it will be—if ever—is far off. For now, at least, the benefits of cell-biology research _45_ the risks.”

问题1选项
A.regulated
B.developed
C.manufactured
D.assigned
问题2选项
A.identification
B.reasoning
C.understanding
D.acceptance
问题3选项
A.reaction
B.objective
C.objection
D.realization
问题4选项
A.service
B.arranging
C.workings
D.situations
问题5选项
A.absolutely
B.necessarily
C.ultimately
D.naturally
问题6选项
A.hindrance
B.withdrawal
C.obstacle
D.control
问题7选项
A.practical
B.impractical
C.curable
D.incurable
问题8选项
A.bring down
B.bring out
C.bring up
D.bring about
问题9选项
A.no wonder
B.for example
C.no doubt
D.for sure
问题10选项
A.retain
B.rest
C.refrain
D.resume
问题11选项
A.keep
B.probe
C.encode
D.reveal
问题12选项
A.however
B.furthermore
C.therefore
D.moreover
问题13选项
A.presuming
B.given
C.supposing
D.provided
问题14选项
A.in fact
B.not yet
C.till now
D.as yet
问题15选项
A.overreach
B.outgrow
C.outweigh
D.overcome
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