高频真题 test31
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Human perspiration is odorless. However, certain bacteria on the skin ingest sebum, a component of perspiration, and after doing so excrete compounds that have an unpleasant odor. When applied to the skin, a newly developed chemical has the effect of reducing the odor. Applying the chemical does not block the secretion of sebum nor does it reduce the population of the bacteria. Therefore, the chemical probably renders odorless the compounds secreted by the Bacteria.
Which of the following,if true.most seriously weakens the argument?
A
Killing the bacteria that ingest sebum can allow other, more harmful bacteria to colonize the skin.
B
The chemical causes bacteria to change their ingestion behavior, including which substances they ingest.
C
Attempts to develop a chemical that would block the secretion of sebum have been unsuccessful.
D
The chemical does not combine or in any other way chemically react with sebum.
E
The vast majority of bacteria that inhabit the human skin do not cause unpleasant odors.
Select one answer choice.
答案与解析
我的答案
1.未作答
正确答案
1.B
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