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