描述 ICMP的用途。
ICMP在所有的 TCP/IP 主机上都实施; ICMP消息承载在 IP 数据报中， 用于发送错误消息和控制消息， ICMP消息的例子包括 ping 和“目的不可达” .
暂无解析
Weallfound_____toplaythegame.
Thesmallmountainvillagewas（）bythesnowformorethanonemonth.
It’syourjob________thepopstars.
Writing:
Thepresentworldwitnessesinventionanduseofvariousrobots,someofwhomevencanplaygameswithhumananddefeatthelatter.Suchbeingthecase,manyareworriedthatrobotswillsurpasshumanbeingsinintelligenceandenslavethem,whileothersbelievethatthehumanmindwillalwaysbesuperiortomachinesbecausemachinesareonlytoolsofhumanminds.Whatisyouropinion?Writeanessayofabout400words.
Inthefirstpartofyouressayyoushouldstateclearlyyourmainargument,andinthesecondpartyoushouldsupportyourargumentwithappropriatedetails.Inthelastpartyoushouldbringwhatyouhavewrittentoanaturalconclusionormakeasummary.
Youshouldsupplyanappropriatetitleforyouressay.
Markswillbeawardedforcontent,organization,grammarandappropriateness.Failuretofollowtheaboveinstructionsmayresultinalossofmarks.
GreatasNewtonwas,manyofhisideas____todayandarebeingmodifiedbytheworkofscientistsofourtime.
