题型:问答题 简答题 对于自然数n,如果能找到自然数a和b,使得n=a+b+ab,那么n就称为“好数”.如3=1+1+1×1,所以3是“好数”.在1到100这100个自然数中,有多少个“好数”? 查看答案
题型:问答题 简答题 So ________ was the news that we all got ________ . A.disappointed; disappointing B.disappointing; disappointed C.disappointed ; disappointed D.disappointing; disappointing 查看答案