问题
单项选择题
None of these ______ is an end in itself. They are tentative, experimental. They are movements not towards something definite but away from something definite.
A．assurance
B．expedients
C．awareness
D．doubts
答案
参考答案：B
解析： assurance“确信，断言”；expedient“权宜之计”；awareness“知道，晓得”；doubt“怀疑，疑惑，疑问”。答案是B。