顾炎武指责李贽“无忌惮而敢于叛圣人”，黄宗羲谴责李贽“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（    ）

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      My name is Jack. I am a pupil of Grade One. I'm in No.1 Middle School. On weekdays I get up at six o'clock. I have breakfast at seven and then I go to school by bike. We begin our class at eight o’clock in the morning. We have four classes in the morning and three in the afternoon.

      At noon, I have lunch at home. Classes are over at four fifteen in the afternoon. After class, we often play football in the afternoon. I go home at about five. I have supper at about six thirty in the evening. I do my homework at seven thirty. At weekends, I watch TV. I often go to bed at ten. I'm very happy.