糖尿病是一种激素分泌异常造成的非传染性疾病，我国患糖尿病的人数居世界首位．糖尿病发病的主要原因是（ ）
如图，直线AB、CD相交于点E，DF∥AB．若∠D=70°，则∠CEB等于（ ）
——I can hardly believe my eyes. Is that you, Lucy?——Yes. It has been almost 20 years______ we were together.
