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another cr
Damages nerves in the spine do not regenerate themselves,nor even under the spur of nerve-growth stimulants.The reason is the presence of nerve-growth inhibitors in the spine. Antibodies that deactivate the inhibitors have now been developed. Clearly, the nerve repair will be a standard medical procedure in future.
Which one weakens the conclusion?
a Prevention of nerve regeneration is only a by-product of the main function in the human body of the substances inhibiting nerve growth.
b Certain nerve-growth stimulants have the similar chemical structures to those of the antibodies against nerve-growth inhibitors.
Which one is better?????
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讨论中A、B选的都有，但我认为答案应是b
because stimulants have the similar chemical structures to those of the antibodies ,then inhibitors may inhibit antibodies.

不过不是很SURE

如果B 选项为 Certain nerve-growth stimulants have the similar chemical structures to those of the nerve-growth inhibitors.
我就蛮确定B了
because Antibodies will deactivate the nerve-growth stimulants
because of the similar chemical structures

ur opinion?[em19][em19]