题目

 生物进化的总体趋势是   A. 从简单到复杂，从低等到高等，从植物到动物 B. 从简单到复杂，从低等到高等，从水生到陆生 C. 从复杂到简单、从低等到高等，从水生到陆生 D. 从复杂到简单、从高等到低等，从陆生到水生 答案：B It is the third time that Susan ______ late to work and it’s high time that she ________the truth.        A. has come; tell          B. has come; told   C. came; should come  D. had come; told