Because of the limited time, he didn’t go into details on the subject. He only spoke ____. A. in common B. in general C. in particular D. in public 答案:B句意: 由于时间有限, 对于那个话题他没有展开。他只是概括地说了一下。in general是in detail(详尽地)的反义词。in common共同的, 共有的; in particular尤其地, 特别地; in public公开地, 当众。 设集合A={x|a≤x≤a+3},B={x|x≤1或x>5},分别求下列条件下实数a的值构成的集合.(1)A∩B=Φ;(2)A∪B=R;(3)A∪B=B.