1. when you operate machines you need to know some of their functions.2. The Economy of China has grownin leaps and bounds(迅猛地）in recent years.3. the expanding of the gap betweenurban and rural areas is caused by tne uneven distribution of resources.4.xi'an has a long history and rich resources.5. Weather permitting,
1 You have to understand the basic function of a machine to operate it.2 China's economics growth increases drastically over these past few years3 The gap between rural and urb
1 Operate the machines need to understand some of its properties2 The growth of China's rapid economic growth in recent years3 Widening gap between urban and rural areas becaus
1.Operate the machines need to understand some of its properties.2.The growth of China's rapid economic growth in recent years.3.Widening gap between urban and rural areas beca
