狒狒逻辑两道问题

joyviva

Some good cooksare gourmet cooks who pride themselves onalways using extravagantly rich ingredients in elaborate recipes. Some goodcooks can be characterized as fast-food cooks. They may use rich ingredients aslong as the recipes are easy to follow and take little time. Other good cooksare health food enthusiasts, who are concerned primarily with the nutritionalvalue of food. But even though not all good cooks are big eaters, they allenjoy preparing and serving food.
If the informationin the passage is true, which one of the following CANNOT be true? （D）
(D) There arefewer good cooks who enjoy serving and preparing food than there are good cookswho are big eaters.
(E) Gourmet cooks,fast-food cooks, and cooks who are health food enthusiasts are all big eaters.

我觉得E也肯定不对啊，和原文最后一句话相反。

A low-pressureweather system is approaching Plainville;rainfall results from about 70 percent of such systems in the Plainville area. Moreover, the currentseason, spring, is the time of year in which thundershowers, which sometimesresult from low-pressure systems, are most likely to occur in Plainville. Knowing which oneof the following, in addition to the information above, would be most usefulfor determine the probability that Plainville
will have a thundershower soon? （C）(B) the percentageof spring rainfalls in Plainville that are thundershowers
(C) the percentageof thundershowers in Plainville that result from low-pressure systems


低压*70%=降雨；我觉得接下来需要B才能算出来雷阵雨的概率啊？
否则，按照C，低压*一个新的概率，得到的是什么呢。。