【题目】The _____ of the harmful chemicals on the world’s lakes and oceans has raised awareness of the public.
A. effectB. effort
C. donationD. distribution
在线课程【答案】A
【解析】
考查名词辨析。句意：有害化学物质对世界湖泊和海洋的影响提高了公众的认识。A. effect影响；B. effort努力；C. donation捐赠；D. distribution分配，根据题意，故选A。