问题
选择题
____ the help of experienced career instructors, this type of job-hunting training ____ to be very efficient.
A．By; has proved
B．With; has proved
C．Under; is proving
D．With; is proved
答案
答案：B
本题主要考查固定搭配的识记及动词的语态。根据help的搭配要求，介词须用with，从而排除选项A、C；动词prove表示事物的性质时，为不及物动词，不用被动形式，于是本题的正确答案为B。