搜题请搜索小程序“爱下问搜题”
问题 单项选择题

人们开始通过对自己、他人、环境、社会进行综合认识，调整自己的行为发展，这是行为发展的（）

A.被动发展阶段

B.主动发展阶段

C.自主发展阶段

D.巩固发展阶段

E.深入发展阶段

答案

参考答案：C

计算题

火星的半径为地球半径的一半，火星的质量为地球质量的，已知一个物体在地球上的重力比在火星上的重力大49N，求这个物体的质量是多少？
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完形填空

请将汉语译成英语，划线部分的英语译成汉语。

The technology of the future will allow me and my family to be healthy, 小题1:而且从来就不为生病烦恼。No one will be sad小题2:because humans will have learned to fix many of the problems  that affect us now, like war, pollution and hunger. Technology will guarantee good health and happiness for all! I imagine that the workday will be only four hours long, and小题3:每个人可以做各种有趣的兼职. We will have robots and computers to assist us with the things that are boring. 小题4:This will simplify our lives. Maybe there will even be automatic kitchens to cook instant meals for us. 小题5:Then families will be able to spend the maximum amount of time enjoying each other’s company and the minimum amount of time doing housework.
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