题目

Miss White is a good teacher. She usually _________.A. helps me to English B. help me learn EnglishC. helps me with my English. 答案：C12．下列说法不符合事实的是（　　）A．钢铁生锈是缓慢氧化B．铁在氧气中燃烧生成氧化铁C．铁锈的主要成分是四氧化三铁D．及时擦干被雨水淋湿的自行车可防止自行车生锈