若a+b=1,a-b=2006 ,则a2-b2=( )
2006
—I think walking in the rain is terrible.
—But I think it's _______. [ ]
A. bad
B. boring
C. busy
D. interesting
中 * * 党历史上有“南陈北李,相约建党”的说法,其中的“陈”、“李”分别指()。
A.陈独秀,李达
B.陈独秀,李大钊
C.陈潭秋,李大钊
D.陈潭秋,李达