标题: LSAT-25-4-14 [打印本页] 作者: mythicalman 时间: 2003-11-17 00:50 标题: LSAT-25-4-14 14. When soil is plowed in the spring, pigweed seeds that have been buried in the soil all winter are churned up to the surface and redeposited just under the surface. The brief exposure of the seeds to sunlight stimulates receptors. Which have become highly sensitive to sunlight during the months the seeds were buried in the soil, and the stimulated receptors trigger germination. Without the prolonged darkness, followed by exposure to sunlight, the seeds do not germinate.
The statements above, if true, most strongly support which one of the following statements about a field that will be plowed in the spring and in which pigweed seeds have been buried in the soil all winter?
(A) Fewer pigweed plants will grow in the field if it is plowed only at night than if it is plowed during the day.
(B) Fewer pigweed plants will grow in the field if it is not plowed at all than if it is plowed only at night.
(C) Fewer pigweed plants will grow in the field if it is plowed just before sunrise than if it is plowed just after sunset.
(D) The pigweed seeds that are churned up to the surface of the soil during the plowing will not germinate unless they are redeposited under the surface of the soil.
(E) All of the pigweed seeds that are already on the surface of the soil before the field is plowed will germinate.
A
D为什么不对？D和最后一句不是一个意思吗？ 作者: 番茄炒蛋 时间: 2003-11-18 01:39
D当然不对 种子被翻出来之后就算不埋下去也是有可能发芽的 原文中最后的一句只是在说Without the prolonged darkness, followed by exposure to sunlight, the seeds do not germinate D中说的是 unless they are redeposited under the surface of the soil 再仔细想想作者: mariezhu 时间: 2003-11-18 14:17
seeds are buried in winter (in darkness) plowed in spring (to make them expose to sunlight) | receptors highly sensitive to sunlight are stimulated （after being buried in darkness for such a long time） | seeds germinate