单项选择题 Conversely, if spending on computers ______ , that’s a sign that companies had little faith in the productivity benefits of information technology.

单项选择题 The fact is ______ and I believed it so much.compellingD、compelled

单项选择题 Back then, when unemployment fell below 6.5%, inflation ______ .upB、shut downC、took offD、put on