She is always easy to get along with but she is difficult to understand ______.A．at one t
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She is always easy to get along with, but she is difficult to understand ______.
A．at one time
B．at a time
C．at times
D．at all times
请帮忙给出正确答案和分析，谢谢！
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正确答案：C
词语搭配题。本句的意思是：她总是很好相处，不过有时有点让人摸不透。介词短语搭配题：attimes意为“有时”；atonetime意为“曾有一时．一度”；atatime意为“每次，一次”；atalltimes意为“总是”。