Unit3 Computers（学案一）2020年高中同步教与学英语(人教版必修2）

书书书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` ! `a @@:-25,+::: ::: b %% 5c %% @A:5- de ! fg *+ ! @:#" ! A:#" ! %:$25$ ! E:8#$2 ! G:#" ! H:* )! J:511 K:'0+, ! L:5,$#;#4#51 ! @N:. 6! @@:8#$2 ! @A:#; 0123 4 ! 01 '()* @:M50+ 6 '*+0+, 3 '"+-*,;#" 3 & A:O' 6 '*250+54'( ) *$+,'; 6 '*,'8" & B"77' 6 '*';$+" 3 '-*,;#" 3 & %:F25$7' 6 '**-*511 6 7''"C1#"+ & E:F25$7' 6 '*$2#"/8#1125 )) +"#;8+7'"9$250+54'( ) *$+, & +,-. 5623 !"#$$%&''()*) + ,-'./)*"01 + &,/*2,*-.**3(&''() 4 (&5),1-$67 6$1" 789:;< ! =>?@ ! ABCDEFGHI " # J% $ ! 825$$2+ 6 250+#"4'(('" ! h 7#-4*-- /i$jk ' 250+:::#"4'(