我国商业保险的主要业务是(　　)

2015年2月26日，中国国家统计局发布的数据显示，2014年我国共消费42.6亿吨标准煤，比上年增长2.2%，而这些煤有一半以上是用来发电的．从能量守恒定率的角度来讲，能量是不能再生的，所以当我们用电的时候，就是在消耗其他的能源，因此我们要节约用电．以下措施中属于节约用电的是（  ）

    Every day in China, about 200 million children go to school. Many of them take school buses to school and back home. Most of the time, the school buses are very safe for them. But sometimes they are also dangerous.

    Several years ago, a serious accident happened to a nine – seat minibus in November in Gansu. There were 62 children inside, and 21 of them died.

    What should we do to keep us safe on the road? First, we should wait for the school bus on time at the right place when we are going to school or coming back home. Second, we shouldn't run or fight on the bus when it is going. Third, we mustn't try to get off when it is moving. Last, don't get on the bus if it is overloaded(超载).

    Our government(政府)also makes rules for school buses. Under the new rules, school buses have a speed limit of 80km per(每)hour on highways and 60km per hour on normal roads. While on the road, other cars must let school buses go first.

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