A:①②
B:①③
C:③④
D:②④
设x,y满足约束条件x-y+5≥0x≤3x+y≥0,则x+12+y2的最大值为( )
我国各类地形中,面积比例最大的是( )
顾炎武指责李贽“无忌惮而敢于叛圣人”,黄宗羲遣责李贽“非名教之所能羁络”,王夫之以“循礼”“秉礼”为“君子之道”,以“尊其尊、卑其卑、位其位”为理想政治局面,并强烈主张严君子、小人之辨。明清时期出现上述现象的主要原因是( )
—The final round of the competition is coming near. Can I really do well this time?—Believe in ______. You're always the best in our school.
He has ________ all of the money and no one would like to help him.