园林美是山石植物等造园要素的拼凑和累加,其本质就是自然美。
参考答案:错
下面能量转化过程中,主要发生了化学变化的是( )
A.绿色植物将太阳能转化为化学能
B.水力发电
C.太阳能热水器烧水
D.电热器取暖
Unlike competitive running , race walkers must always keep some portion of their feet in contact with the ground.
A.run
B.runner
C.runners
D.running race