题目

先通读下面的短文，掌握其大意，然后在每小题所给的A、B、C、D四个选项中，选出可以填入空白处的最佳选项。 British people are famousfor apologizing (道歉) in almost every situation. 1 we are apologizing for asking a question, forour bad weather or we sneeze before others (打喷嚏),we areprobably the number-one nation for apologies. We pride ourselves on our polite2 in public. As a result, we use the word sorry quite a lot—even when we don't really 3 it! Usually, if you want to ask someone for the time, you would start by saying Sorry to bother 下图表示的是一些物质在常温下的近似pH，回答下列问题：(1)厨房清洁剂呈 性，在少量厨房清洁剂中滴入几滴酚酞，溶液呈 色。(2)酸雨的酸性比正常雨水的酸性 (填“强”或“弱”)。(3)测量苹果汁pH时，pH试纸是否需要先用蒸馏水湿润 (填“是”或“否”)。