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 w l on the street, a young man ran by hurriedly, brushing(轻擦)against my
handbag. He continued his way, but turned b 2 and said "sorry" to me. Even in a rush, he didn't
f 3 to say "sorry". One day, after I bought some bananas, the shopkeeper was passing me the
change, but l wasn't ready for it and a coin dropped onto the ground. "Sorry, Madam," he said w 4
bending to pick it up.Iwas s 5 why he said "sorry" to me. Another time, I stepped on a man's f 6 at
the en- trance to a cinema. At the same time, we b 7 said " sorry " .
Slowly, I got to know that when something unpleasant happens in daily life, the British don't c 8
much about who is wrong, lf someone is in trouble, a "sorry" is always n 9 . Perhaps that is w 10
seldom see people quarrel on the buses or streets in Britain.
1._________2.________3.__________4.__________5._________
6._________7.________8.__________9._________10.________
，及相应的齐次方程
，分别有特解
满足y(0)=1的特解是y=______．