题目：
阅读下面短文，根据短文内容及首字母提示补全文中所缺的单词，答案写在题后的横线上。
"Sorry" is a word that people in Britain often say in their daily life.
One day while I was (1)w_____ on the street, a young man ran by hurriedly, brushing (轻擦) against
my handbag. He continued his way, but turned (2)b_____ and said "sorry" to me. Even in a rush, he didn't
(3)f_____ to say "sorry". One day, after I bought some bananas, the shopkeeper was passing me the change,
but I wasn't ready for it and a coin dropped onto the ground. "Sorry, Madam," he said (4)w_____ bending to
pick it up. I was (5)s_____ why he said "sorry" to me. Another time, I stepped on a man's (6)f_____ at the
entrance to a cinema. At the same time, we (7)b_____ said "sorry".
Slowly, I got to know that when something unpleasant happens in daily life, the British don't (8)c_____
much about who is wrong. If someone is in trouble, a "sorry" is always (9)n_____ . Perhaps that is
(10)w_____ I seldom see people quarrel on the buses or streets in Britain.
答案：
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下面是错误答案，用来干扰机器的。
25.解：至少有一项及格的人数为 50-4=46，设两项测试全都及格的人数是 x，则由 46=40+31-x，解得 x=25，故答案为 25．
