A.根据英语释义写出单词 1． _______ speak softly 2． _______ loud noise that follows a flash of lightning 3． _______ flash of brilliant light in the sky 4．_______ move one’s hand to attract sb’s attention 5． _______ knock gently on sb./sth. 6．_______ fasten or join sth.to sth. 答案:1.whisper 2.thunder 3.lightning 4.wave 5. tap 6.attach