题目

 The policeman asked Mr. Smith ________________.     A. what did his car look like  B. how was his car         C. how did his car look        D. what his car looked like   答案：D下列哪两种消化液中都含有消化糖类、蛋白质和脂肪的酶 （ ）①唾液 ；②胃液；③肠液 ；④胆汁 ；⑤胰液 A、②③ B、③④ C、③⑤ D、②⑤