Due to personality_____, the two colleagues never got on well in work.(2010-66)

单项选择题The chief of surgery became committee chairman by virtue of（）.(2014-72)

A．seniority
B．service
C．age
D．rank

单项选择题When Linda heard the good news she tried to sound casual, but her excitement was obvious. The underlined part means（）

A．uncaring
B．disinterested
C．without plan
D．without warning