选择题：They _________ on the program for almost one week

题目内容：
They _________ on the program for almost one week before I joined them, and now we ___ on it as no good results have come out so far. ( )(本题2.5分)
A、 had been working; are still working
B、 had worked; were still working
C、 have been working; have worked
D、 have worked; were still working
参考答案：

下列选项中,体现了中华民族爱国主义优良传统的有( )(本题7.0分) A、 “先天下之忧而忧,后天

下列选项中,体现了中华民族爱国主义优良传统的有( )(本题7.0分) A、 “先天下之忧而忧,后天下之乐而乐” B、 “人生自古谁无死,留取丹心照汗青”

分类：西安石油大学-石油工程技术-大学英语I（上）  题型：选择题
查看答案

下列最适于进行综合的深入的分析，多为政论、重要评论等理论性文章所采用的结构形式是

下列最适于进行综合的深入的分析，多为政论、重要评论等理论性文章所采用的结构形式是 A.平列式 B.递进式 C.总分式 D.时空正常式

分类：西安石油大学-石油工程技术-大学英语I（上）  题型：选择题
查看答案