题目

Kelly will have exams（考试）in February. Let’s look at the timetable.（时间表）DaySubjectsTimeFromTo ThursdayFebruary 21st 2019Chinese8:00 am9:30 amScience10:30 am11:30 amMath1:30 pm3:00 pmHistory3:50 pm4:50 pmFridayFebruary 22nd 2019English8:00 am9:30 amGeography10:20 am11:20 am 【1】When will Kelly have the exam?A.In January. B.In February. C.In June.【2】When does the math exam finish?A.At 9:30 am. B.At 11:30 am. C.At 3:00 pm.【3】Kelly will have the English exam on ________.A.Wednesday B.Thursday. C.Friday.金刚石和石墨是碳元素的两种结构不同的单质．在100kPa时，1mol石墨转化为金刚石，要吸收1.895kJ的能量．下列说法正确的是（　　）A．石墨比金刚石稳定B．金刚石中C-C键的键能大于石墨中的C-C键的键能C．1mol石墨比1mol金刚石的总能量高D．1mol石墨和金刚石完全燃烧时释放的能量石墨比金刚石多