选择填空解题技巧一、特值法1、等差数列{an}，{bn}的前 n 项和分别为 Sn，Tn，若＝，则＝( )A. B. C. D.2、在等差数列{an}中，a1＝1...
1、对任何180°<α <360°,cos α2 的值等于 （ C ）（A）√1+cosα2. （B）√1−cosα2.（C）−√1+cosα2. （D）−√1−cosα2.2...
考研英语完型填空练习题 When television first began to expand, very few of the people who had become famous as rad...
