Many people think that playing too many video games ____________________________________ the mind. (have a negative effect on)
查看答案
For the past several years, scientists have been warning governments to try to __________________________ of climate change before it is too late. (deal with the issue)
主视图和俯视图的在长度方向上应该 ,主视图和左视图在高度方向上应该 ,俯视图和左视图的表达物体的宽度应该 。
跟读课本P155 Text A 单词,并上传跟读音频