11 x+y=5&2x+2y=8之间最短距离与1比较 115 从一堆6个什么东东(blesket?不认识的单词)里取4个共会有15种不同的可能,如果从8个里面取4个会比从6个里面取多多少种可能?我选的是55.这题有点怪,不知为什么它还要把15说出来。难道是我理解有误?16 一个表3分钟慢一秒钟,问慢3分钟要过多少分种?(答案:540分钟)17 3/0.0001 与 3/0.000099 比大小?(答案:
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