Since 1992,the team
                    举一反三
- Since 1992, the team has been carrying out _________ into the effects of human activity on wildlife.
 - Since 1992, the team has been carrying out _________ into the effects of human activity on wildlife.( ) A: research B: study C: experiment D: trial
 - Since 1992
 - Tom has to work day and night since he became a team leader
 - _____ we are from different departments, we work as a team with one goal. A: Because B: Although C: If D: Since
 
