— She should cheer up. A dead heart is much _______ than sadness.

一战期间，陈独秀等人在上海出版了一份以青年为读者对象的刊物中，有这样一句话：“笃古不变之族，日就衰亡；日新求进之族，方兴未已。”反映了变革、求进的诉求，这里的“变”主要是

读下面四幅经纬网图，在图中数字所示的地点中，既属于东半球、又位于北半球的是（　　）

    During the day we work and play, and at night we sleep. Our bodies rest while we are 1. In the morning we are ready2 again. Our bodies grow 3 while we are asleep. Children who are tired usually 4 sleep. We can get better at our lessons 5 we have had plenty of rest. Boys and girls who are eight or nine years old need ten hours of sleep every night. Our bodies need plenty of 6 when we sleep. If we do not get enough fresh air, we 7 tired when we wake up. While in bed we must not cover our 8. Our lungs(肺) need to get enough fresh air. If we 9 our windows at night, we can have plenty of fresh air. Cool air is better than warm air. Boys and girls who want to be 10 must get plenty of sleep.