The manager came up to see ________.
A:what was the matter
B:what the matter was
C:what the matter is
D:what's the matter
下列关于生物技术的安全性和伦理问题的分析,不合理的观点是( )
4月30日晚,上海世博会开幕式上匠心独具的焰火表演,营造了如诗如画的“春江花月夜”氛围.有关烟花、爆竹成分的推测不合理的是( )