[問題] 一題CR
Which of the following most logically completes the argument?
A certain cultivated herb is one of a group of closely related plants that
thrive in soil with high concentrations of metals that are toxic to most
other plants.
Agronomists studying the herb have discovered that it produces large amounts
of histidine, an amino acid that, in test-tube solutions, renders these
metals chemically inert. Possibly, therefore, the herb’s high histidine
production is what allows it to grow in metal-rich soils, a hypothesis that
would gain support if ______.
(A)histidine is found in all parts of the plant—roots, stem, leaves, and
flowers
(B)the herb’s high level of histidine production is found to be associated
with an unusually low level of production of other amino acids
(C)others of the closely related group of plants are also found to produce
histidine in large quantities
(D)cultivation of the herb in soil with high concentrations of the metals will,
over an extended period, make the soil suitable for plants to which the
metals are toxic
(E)the concentration of histidine in the growing herb declines as the plant
approaches maturity
我選(C) 感覺是對照組支持
來欣的答案好像給E，是我抄錯了嗎？ 網路上找了一下 有人說答案是C
註：來欣是隨堂測驗的 FORM A05第11題
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