研究发现，砷( As)可以富集在植物体内，转化为毒性很强的金属有机物，影响水稻的株高、根长和干重；加P（与As原子结构相似）处理后水稻茎叶和根中P含量增加、As含量相对减少，水稻生长加快，干重增加。对此现象的解释不合理是           

    Mr. Black has a big shop in the city center. He tells all his employees (雇员) to be 1 to the buyers and he gets a lot of money.

    One day an old woman went to the shop to buy a silk blouse. When she came 2of the shop with the blouse, she left her wallet in it. A girl3and found there were nearly five hundred dollars in it. She looked around and 4 saw it. She put it into her pocket 5. Soon the old woman came back to look for it, of course she 6 . That evening Mr. Black was told about it. He was very angry and sent the girl away. Then he decided to employ7 honest man to take her place. Several young 8 came, but none of them could satisfy him.

    This morning a young man came into9 office. He asked, “Do you smoke, sir?”

    “No, sir,” answered the young man.

    “Do you drink?”

    “No, sir.”

    Mr. Black asked him the other questions, and the young man's answers satisfied him.10 he employed him, he asked him the last question, “You have no shortcoming(缺点), do you?”

    “No, I don't, sir,” said the young man. “I only like telling lies (撒谎)”.