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：Dpoint 要点;论点，主旨。如：He said nothing to the point.(他说的不切题。)如图，在⊙O中，已知∠OAB=21.5°，则∠C的度数为 ．