题目

属于氮肥的是A.K2CO3 B.Na2SO4 C.NH4HCO3 D.Ca(H2PO4)2 答案：【答案】C【解析】A、碳酸钾中含有钾元素，属于钾肥，选项错误；B、硫酸钠不含氮、磷、钾三种元素，不属于化肥，选项错误；C、碳酸氢铵中含有氮元素，属于氮肥，选项正确；D、磷酸二氢钙中含有磷元素，属于磷肥，选项错误，故选C。　　It was over two months before Christmas when 9-year-old Almie Rose told her father and me that she wanted a new bike. Her old Barbi bike was just too old and it often needed repairs. As Christmas came nearer, her dream for a bike seemed to disappear, for she didn't mention it again. 　　Then much to our surprise, on December 24, she said that she really wanted a bike as the Christmas present more than anything else. Now we didn't know what to do. It was too late. We were busy with Christmas dinner and packing presents for our children, parents and also friends till midnight. So there was no time to buy the “right bike” for our little girl. Thinking that we might in this way make our child unhappy at Christmas, we felt guilty and sad. 　　Suddenly my husband came up with an idea. ”What if I make a little bike out of the clay (泥土) and write a note that she could trade in (交换) the model bike for a real one after Christmas?” So he spent the next 5 hours working on a small clay bike. On Christmas morning, we were very excited for Almie Rose to open the little box with the beautiful red and white bike and the note. She opened the box and read the note loudly. She looked at me and said, “So, does this mean I can trade in this bike for a real one?” Smiling, I said, “Yes.” 　　Almie Rose had tears in her eyes when she replied, “I would never trade in this beautiful bike that daddy made me. I prefer to keep it rather than get a real one.” At that moment, we thought we would have moved the God to buy her every bike on earth. (1) What did Almie Rose want as her Christmas present? [　　] A．A clay model bike.B．An old Barbi bike. C．A new bike.D．Every bike. (2) Rose's parents didn't buy her a bike because she ________. [　　] A．only asked for it again on December 24 B．didn't want it any more C．changed her mind for something else D．didn't mention it (3) The underlined word “guilty” in the 2nd paragraph means [　　] A．unhappyB．worried C．pleasedD．sorry (4) Rose's father got the idea to ________. [　　] A．spend 5 hours working on the clay B．make a small bike out of the clay C．paint her old bike red and white D．put the present into a box (5) From Rose's words in the last paragraph, we know that she ________. [　　] A．still wanted to get a real bike B．didn't know the meaning of the note C．preferred a real bike to the model one D．was greatly moved by what her father had done for her