【单选题】Success may be late in coming, but when it does come it makes amends for previous failures______.
【单选题】牡丹既是名花,也有重要的药用价值,药用部位主要是( )。
【判断题】中国青铜时代大约经历了1500多年,其间出现两个高峰:一个在殷墟时期,以商王武丁的妻子,妇好留下的青铜器为代表,工艺主要为合范铸造;一个在春秋战国之际,以楚国青铜器为代表。
【单选题】They have discussed for several years of drafting a new law to control the pollution, but when it will be is still unknown. [ ]