题目

 下列四组值中,是二元一次方程的解的是（       ） A．                     B．          C．           D． 答案：D                       B   One day,Lei Feng saw a woman sitting in front of Shenyang Station. She looked very worried. Lei Feng went up to her and asked ,“What's the matter,madam? Can I help you?” “I'm from Shandong,and I'm on my way to Jilin to see my husband. I bought a ticket this morning,but I can't find it now. ” “Isn’t it in one of your pockets?” asked Lei Feng. “No,I'm sure it's lost,and I have no money to buy another one. Oh,dear!What shall I do?” Then the woman began to cry. “Don’t worry. Let's see what we can do?” Lei Feng took the woman to the ticket office. He bought her a ticket and said ,“The train is going to leave in a minute. Let's hurry. ” The woman did not know what to say. She said “Thank you” again and again. When the train was starting,she suddenly remembered that she didn't know Lei Feng's name yet. She felt very sorry.() 6. The woman was worried because she lost her .   A. letter   B. money   C. child   D. ticket() 7. Lei Feng  a ticket for the woman and sent her to the train.   A. found   B. looked   C. bought   D. gave() 8. The woman was sorry because she didn't  .   A. say “Thank you”   B. caught the train   C. missed the train   D. know Lei Feng5s name() 9. Lei Feng helped the woman because he .   A. loved the people   B. knew her   C. had more money   D. was a soldier() 10. The best title of this story is  .   A. Soldier and woman   B. A lost ticket   C. At a railway station   D. A story about Lei Feng