Since 1992, the team has been carrying out _________ into the effects of human activity on wildlife.
A、study
B、research
C、experiment
D、trial
主题英语

章节列表

01 COLLEGE LIFE1802 A WORLD OF FAST FOOD1803 HEALTHY HABITS1904 PERSONAL HEROES1905 BILINGUAL EDUCATION1906 LOVE AND MARRIAGE1907 MONEY MATTERS1808 SPACE IS THE PLACE1509 POPULATION ADN IMMIGRATION2610 DISASTERS2511 A CAMPUS OF READERS2512 ALL TALK2513 THE SPIRIT OF COMPETITION2414 FUN MATTERS3115 GENES AND PERSONALITY2916 DIFFERENCES IN COMMUNICATION30期末考试41