It was much ____ (noise) after he turned on the radio.
分解因式:x2﹣9+3x(x﹣3)
傻事____(A.sǎ B.shǎ)
棉袄____(A.wò B.ǎo)
寂寞____(A.jì B.jí)
侵犯____(A.qǐn B.qīn)
10×34 ____10
23×15 ____ 23