Ana:Wheredidyougoonyourbusinesstrip?Chris:I______toBrazilandColombia.Ana:When______back?Chris:Icamebacklastnight.Myflightarrivedatmidnight!Ana:Didyouhaveagoodtrip?Chris:Oh,yeah.Itwasagreattrip.I______agoodtime.Ana:DidyoustopinSaoPaulo?Chris:Yes,I______inSaoPaulofortwonights.Ana:DidyouvisitMr.DaSilvaatAnimaCommunications?Chris:No,I______himonthistrip.I'llvisithimnexttime.Ana:______toMr.Arnelloaboutthetrip?Chris:Yes,Idid.Wehadameetingthismorning.

执行命令 ls –l 时，某行显示如下：-rw-r--r-- 1 chris chris 207 jul 20 11:58 mydata(1) 用户chris 对该文件具有什么权限？(2) 执行命令useradd Tom后，用户Tom对该文件具有什么权限？(3) 如何使任何用户都可以读写执行该文件？

Chris buys more new jewelry when her income rises. This means that, for Chris:

Chris was a ____ before.

Jimmy: It's almost May Day! Chris, 1Chris: 2 Blue sky, blue water, warm sunshine.Jimmy: 3 But we haven't too much money.Chris: You're right, Jimmy. So, does that mean we do nothing this year?Jimmy: 4 Maybe we ...Chris: 5 Good food, fresh air.Jimmy: OK, let's try to make it. A: Sounds great. B: what are we going to do during the holiday? C: How about going for a picnic? D: Well, shall we go to a beach? E: I don't say that.

There are mainly three characters: Chris Gardner, Christopher, Linda, and the leading character is Chris Gardner, the father.

Chris is from ___________University.

Where is Chris going?

When is Chris going to a party?

智慧职教: 执行命令 ls –l 时，某行显示如下：                           -rw-r--r--  1  chris  chris  207  jul 20  11:58  mydata（1）用户chris 对该文件具有什么权限？ （2）执行命令useradd Tom后，用户Tom对该文件具有什么权限？ （3）如何使任何用户都可以读写执行该文件？（4）如何把该文件属主改为用户root ？