_________the phenomenon of “bystander effect”in the Yueyue event, most Chinese strongly believe that there still exist love and warmth in people’s hearts.
24. A growing number of people are beginning to believe that learning new skills and knowledge
_____ more promotion opportunities.
contributes to B. refers to C. devotes to D. appeals to
22. —Mr. Smith _____ in Russia for 10 years.
—No wonder he can speak Russian fluently and now teaches Russian in a Chinese college.
had stayed B. has stayed C. stayed D. stays