正气
参考答案:
正气,是一身之气相对邪气时的称谓,是指人体内具有抗病、祛邪、调节、修复等作用的一类细微物质。
Tom was about to close the window _____ his attention was caught by a bird. [ ]
A. when
B. if
C. and
D. till
洗涤后,需取出衣物检查洗涤质量,如发现未洗涤干净的应如何处理?