题目

选择合适的句子完成对话A：What do you like?B：I like apples and bananas.A：I don't like apples or bananas. a．I like mangoes b．What about you，Lisa? 答案：【1】b【2】a（2000•杭州）半径不等的两圆⊙O1，⊙O2相交于点A和B，现有下列结论：①AB平分O1O2；②O1O2平分AB；③AB⊥O1O2；④O1O2＜O1A+O2B上述结论中，正确的共有（ ）A．1个B．2个C．3个D．4个