江苏老人陈鸿儒十几年来每天带铲子出门义务清除小广告。老人的行为( )
①维护了法律的权威 ②履行了公民的道德义务
③使得人生更有意义 ④具有高度的社会责任感
A:①②③
B:①②④
C:①③④
D:②③④
读拼音,写汉字。
sī kǎo
yí dònɡ
jì suàn
zhǔn bèi
____
将正确的图片和句子配对
① It's yellow. It's small. It goes “Peep,peep”.
② It's fat. It goes “Oink… oink”.
③ It's big. It goes “ Moo…moo”.
④ It's thin. It's in the tree.
⑤ It's yellow. It goes “ Quack …quack”.
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“绿色食品”指的是( )