题目

已知函数是定义域为的偶函数. 当时，， 若关于的方程（）,有且仅有6个不同实数根，则实数的取值范围是（  ） A．     B．      C．       D． 答案：D 完形填空     I finished  my cooking  course in a college at the  age of 21. I  thought I was  going to ___1___ a world-famous cook. I hoped people would travel from all over the world just to get a ___2___ of my food. But three months later, I knew I was ___3___. Since nobody was travelling to taste my food. I decided I should travel to taste theirs.    ___4___ my travel, I visited many different countries, such as Japan  and  France, where  different kinds of food ___5___ my eyes. I especially loved the experiences in Italy and China.        When in Italy, I learned how to 6 pizza and salads. We had long lazy lunches in the sun and evening meals where the ___7___ went on long into the night.    In China, I loved the hot Sichuan food and ___8___ the delicious Beijing snacks (小吃). I  also discovered the joys of making  dumplings with good friends    My year of travel came to an end all  too ___9___, but I had decided what I should do for  the __10___ of my life. I want to bring the  fantastic food of the world  into my kitchen  in  New  York. (     )1. A. invite (     )2. A. smell  (     )3. A. free   (     )4. A. After  (     )5. A. covered(     )6. A. try    (     )7. A. films  (     )8. A. enjoyed(     )9. A. slowly (     )10. A. rest   B. become B. sight  B. right  B. Until  B. opened B. send   B. storiesB. served B. easily B. part   C. follow       C. taste        C. wrong        C. Beyond       C. closed       C. make         C. introductionsC. offered      C. quickly      C. half         D. remember     D. feeling      D. angry        D. During       D. wounded      D. show         D. conversationsD. fetched      D. suddenly     D. quarter