题目

中国是世界上金鱼品种最多的国家。形成众多金鱼品种的原因是（ ）。Ａ．水环境的多样性 Ｂ．自然选择 Ｃ．金鱼的适应能力强 Ｄ．人工选择 答案：D          while,carry,help,sorry,for,read,look,do ,son,sweep   Mrs. Green was cooking supper in the kitchen one evening. Her son,David,came in with a pen and a piece of paper. He put the paper in his mother's hand. It said：  For cutting the grass 1 Mother： $5. 00   For 2 my bedroom: $ 10. 00   Babysitting my little brother 3 you went shopping： $20. 00   For these I 4 ，please pay me $35.  Mrs. Green looked at him. She said nothing and picked up the pen from David. And she wrote：  For the nine months I 5 you while you were inside me.. Free   For all the nights I sat up vuith you and 6 you do your homework ： Free   For the toys,food,clothes.. Free     At last,she wrote ,“My dear 7,please add them up,and the cost of my love is： No charge.  The boy 8 the piece of paper. There were tears in his eyes. He 9 straight at his mother and said ,“Mom,I am 10 . I am wrong."1. 2. 3. 4. 5. 6. 7. 8. 9. 10.