20世纪20年代，列宁反复告诫全党，不要“装腔作势”，“妄自尊大”，“应该抛弃浮夸心理”，“脱掉华丽的共产主义外衣”，要老老实实地学习经商，向普通店员、资本家、商人学习经济管理和商业管理的经验。据此可以推知列宁当时（    ）

下图为部分神经元之间联系的模式图。分别在甲、乙两处提供适宜刺激，引起肌肉收缩的是                           

根据课文和首字母填空。
    Sandy and Sue are in a shop. They want to buy two p____ of sweets，but they are one shilling e____. That's all their p____ money. At last, they buy two small lollipops i____.
    In the afternoon, Sandy and Sue come back home from school. Tea's r____. Sandy and Sue are very h____, but Sandy's hands are very d____. Mother asks Sandy to go and w____ his hands at o____. Now Sandy's hands are clean. Look at Mum's nice clean t____! Sandy cleans his hands with it.
    On Sunday, Sue and Mum are going shopping. Mum sees a pair of nice s____, so she wants Sue to t____ them on. They are very t____ for Sue. Sue wants the pink ones and she thinks they're very p____. They're j____ right.

王平同学测出自己的脉博每分钟跳动的次数是75次，在一次英语演讲比赛中，王平由于没有带手表，为了测出本班选手陈刚同学的演讲时间，他采用了记录脉博跳动的方式来估测，结果在陈刚同学演讲时，王平测出自己的脉博共跳动225次，则陈刚同学演讲的时间大概是____ s．

亚里士多德说：大自然的每一个领域都是美妙绝伦的。请你从“视觉角度”或者“听觉角度”（二者都用也行）描写大自然中的一处美景。字数不少于80字。