内容发布更新时间 : 2025/3/9 5:15:13星期一 下面是文章的全部内容请认真阅读。
***
C. reply to them at once D. keep them as your secrets
解析：由“ What can you do?”部分的第二段可知，但你收到坏信息时，你应该把它们给老 师、家长或警察。
57. If you are not kind to someone, you should ____. A. say sorry to him
C. ask your parents to say sorry
B. talk about it in public D. feel sad and keep quiet
解析： 由“What can you do?”部分的倒数第二段第一句可知，当你对某人不好时，你应该 道歉。
58. This passage is mainly written for ____. A. teachers
B. parents
C. child
D. the police
解析： 通读全文尤其是 “What can you do?”部分的第二段可推知， 本文主要是写给孩子的。
B
In our daily life, robots are often found to do work that is too dangerous, boring, difficult, or dirty. And we often see kids play with toy robots.
But what exactly is a robot? There are some important characteristics( 特征 ) that a robot must have. These characteristics might help you to decide what is and what is not a robot. It will also help you to decide what you will need to build into a machine before robot. A robot has these important characteristics.
SensingFirst of all, your robot would have to be able to sense the environment around it. Give your robot sensors ( 传感器 )：light sensors( eyes ), touch sensors (hands), chemical sensors(nose), hearing sensors(ears) and taste sensors (tongue).
Movement A robot needs to be able to move around its environment.
It can move on wheels, it can be considered as a
walk on legs or be driven by small engines( 发动机 ). A robot can move either the whole body or just parts of it.
Energy A robot needs to be able to power itself. Some robots might power itself with sunlig ht,some might with electricity, while others with the battery( 电池). The way your robot gets its energy will de