Many winemakers use cork stoppers; but cork stoppers can leak, crumble, or become moldy, so that those winemakers must often discard a significant proportion of their inventory of bottled wine. Bottlemaster plastic stoppers, which cannot leak, crumble, or mold, have long been available to winemakers, at a price slightly higher than that of traditional cork stoppers. Cork prices, however, are expected to rise dramatically in the near future. Clearly, therefore, winemakers who still use cork but wish to keep production costs from rising will be forced to reconsider plastic stoppers. And since the wine-buying public's association of plastic stoppers with poor-quality wine is weakening, there is an excellent chance that the Bottlemaster plastic stopper will gain an increased share of the marked for wine-bottle stoppers.
In the argument given, the two portions in boldface play which of the following roles?
The first is a judgment that has been advanced in support of a position that the argument opposes; the second is the main conclusion of the argument.
The first is a judgment that has been advanced in support of a position that the argument opposes; the second is a conclusion drawn in order to support the main conclusion of the argument.
The first is the main conclusion of the argument; the second provides evidence in support of that main conclusion.
The first is the main conclusion of the argument; the second is a restatement of that main conclusion.
The first is a conclusion drawn in order to support the main conclusion of the argument; the second is that main conclusion.
therefore之后的不一定都是主结论
黑脸1:那些使用cork但又希望节省成本的酿酒商将不得不重新考虑塑料瓶塞。->这个intermeditae conclusion是由前一句,cork价格预计大涨推理得到
黑脸2:有很大的机会塑料瓶塞会重新在瓶塞市场上获得增加的市场占有率。-> main conclusion