文档预览： This means that it was the first painting that brought together all of his important techniques and ideas."The House by the Railroad" shows a large, ... 点击下载

文档预览： All plants and animals need nitrogen. Nitrogen is a major element in the proteins in our bodies. The atmosphere is mostly nitrogen.... 点击下载

文档预览： Half a loaf is better than none means that getting part of what you want is better than getting nothing at all. If you know which side your bread ... 点击下载