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—No words are strong enough to express our heartfelt thanks for your assistance. —________.
11个月前
He asked me ________ the likely result of the matter will be.
1年前
用所给词的适当形式填空 1. There are so many people in the street! It is really too ____ (crowd), isn't it?
1年前
1年前
平面内有n条直线,其中无任何两条平行,也无任何三条共点,求证:这n条直线把平面分割成1/ 2 (n^2+n+2)块.
1年前