题目

 根据要求变换句型。 1.He is a teacher.(改为否定句) He _____  a teacher. 2.His father’s telephone number is 535-6601.(对画线部分提问)       _______  his father’s telephone number ? 3.That is a dictionary. (改为复数句子)      ________  ________ dictionaries. 4.Linda has a tennis racket.(改为一般疑问句) _____ Linda _______ a tennis racket? 5. Does your brother like tennis? （作否定回答）   No, ________           . 6. This is my ruler.(变为同义句) This ruler is _______. 7.The schoolbag is behind the chair. (对划向m g镁和铝的混合物中加入适量的稀硫酸，恰好完全反应生成标准状况下的气体b L。向反应后的溶液中加入c mol/L氢氧化钾溶液V mL，使金属离子刚好沉淀完全，得到的沉淀质量为n g。再将得到的沉淀灼烧至质量不再改变为止，得到固体p g。则下列关系不正确的是（ ）A. c=1000b/11.2V B. p=m+Vc/125C. n=m+17Vc D. 5m/3<p<17m/9