题目

The most important _____ of his speech was that we should all work whole-heartedly for the people. A. element   B. spot    C. sense    D. point 答案：D 解析: point(=chief idea of sth. said, done, or planned)要点；论点，主旨：I don't see your point.(我不明白你的意思。)He said nothing to the point.(他说的不切题。)如果等比数列{an}的首项为正数，公比大于1，那么数列（ ）A．是递增的等比数列B．是递减的等比数列C．是递增的等差数列D．是递减的等差数列