①A ____ C ____ E____ ____ H ____ ____
②k ____ ____ n o ____ ____ r ____ ____
馒头是我国北方的主食,据传是三国时期的诸葛亮发明的,我们长时间地咀嚼馒头,口腔里会感觉到有甜味的原因是( )
—I was born _______ May 10th.