题目

下表是某酸碱指示剂在不同的pH范围内显示的颜色: 颜色红橙绿蓝紫 pH 范围1~34~56~78~1011~14 向滴有少量该指示剂的稀盐酸中,逐滴加入氢氧化钠溶液,出现的颜色变化是(    ) A.由红到蓝         B.由绿到橙           C.由蓝到绿     D.由紫到红 答案:AThe reason _____ he gave for his absence is _____ he was drunkenA.why; thatB.because; thatC.that; becauseD.that; that
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