标题: 【逻辑狗狗15讨论】 [打印本页] 作者: ysc125 时间: 2010-9-26 18:31 标题: 【逻辑狗狗15讨论】 Editor:Articles in Gardening Magazine often spur sales of the plants they describe,particularly among people new to gardening. Accordingly, we will no longerpublish articles or accept advertisements praising the beauty of rarewildflowers. Most such plants sold to gardeners have been difficult topropagate under cultivation, so plant sellers often collect them in the wild.Our new policy is part of our efforts to half this yearly plundering of ournative plant populations. Which of the following, if true, support the magazine's new policy as a wayof pursuing the intended effect ? (A) When people new to gardening buy plants, they often fail to take adequatecare of the plants that they buy and become discourged from buying thosevarieties again. (B) Plant sellers who sell rare wildflowers have no reasonably inexpensivealternate way to offer their wares directly to new gardens. (C) The demand for rare wildflowers rarely exceeds the number of such plantsthat can be collected in the wild by plant sellers. (D) The propagation of rare wildflowers often depends on the plant'sinteraction with other organisms in their environment such as plants thatcreate suitable soil conditions or insects and birds that disperse seeds. (E) Revenues from sales of plants collected in the wild are supporting thediscovery of new low-cost techniques enabling rare wildflowers to be readilypropagated innurseries. 我选C，请n们指正——by jassonw（700,v34）