35.The purpose of this passage is to________.
A.list the disadvantages of text messaging
B.introduce the development of text messaging
C.describe the convenience that text messaging brings
D.compare the disadvantages and advantages of text messaging
解析:选A。写作目的题。本文主要讲述了短信息对人们的负面影响,故A为正确选项。
C
Quite simply,a domestic robot is a machine used for household work.There are only a few limited models so far,but scientists all over the country are expecting a robot revolution within the next couple of decades.In fact,in 2006,America’s richest man Bill Gates wrote an article “A Robot in Every Home”,which discussed the great potential (潜力) for robots in every American home.
There are three types of domestic robots:Lowlevel robots,care robots and the highest level robots.Lowlevel robots are basic machines designed for fun.There are several domestic robots in the market today,but most of them are not very advanced.However,there are three domestic robots that are useful when it comes to helping you with housework.
PatrolBot
Produced by MobileRobots Inc.,the PatrolBot is a service robot.It can walk around like a security guard (保安),or go to preprogrammed places using a map,which you can create using its computer system.It can act as a guard with its cameras and detection(侦查)abilities.It can carry up to 15 lbs of weight,which means you can have it carry things from point A to point B.
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