题目

句型转换 1. Her hair is long.     (改为同义句)    She ____________ ___________ hair.     2. Simon does well in swimming.(改为同义句)        Simon                                 swimming. 3. There are some flowers behind the house.    (改为否定句)    There _________ __________ flowers behind the house. 4. I have some bread and milk for breakfast.   (对画线部分提问)    ____________ ___________ you have for breakfast? 5. Turn to page 15, please.   (改为否定句)    ____________ __________ to page 15, pl在 1L a mol／L的澄清石灰水中，通入 b mol 气体，当a＜b＜2a时，最终可得沉淀的质量为 [　　] A．100(b－a)gB．100(b－2a)g C．100(2a－b)gD．(2a－b)g