逻辑项<imgwidth="62"height="29"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj10.files/szlj103931.png">的相邻项是______。
①
<imgwidth="63"height="23"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj10.files/szlj103947.png">
②
<imgwidth="62"height="29"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj10.files/szlj103975.png">
③
<imgwidth="62"height="29"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj10.files/szlj104004.png">
④
<imgwidth="62"height="29"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj10.files/szlj104033.png">