题目

Mr Green asked Lily ________ she had written to her father _______. A . whether; the day before B . whether; yesterday C . that; the day before D . that; yesterday 答案：A下图表示植物细胞呼吸作用过程中葡萄糖分解的两个途径。酶1、酶2和酶3依次分别存在于                                                     （    ） A．线粒体、线粒体和细胞质基质 B．线粒体、细胞质基质和线粒体 C．细胞质基质、线粒体和细胞质基质 D．细胞质基质、细胞质基质和线粒体