Mobility is one of the characteristics often ______ executives, and they must accustom themselves to moving quite regularly.

A、 demanded of
B、 asked for
C、 expected from
D、 called for

【正确答案】 A

【答案解析】 动词词组辨析。demand of表示“向……要求”的意思，demand sth. of/from sb. “要求某人做某事”；ask sb. for sth. 意为“请求/要求某人某事”，对于executives来说，mobility是一种要求，这与后半句的must呼应，所以应用demanded of。expect of意为“指望，期望”，不接from；call for意为“要求，需要”。