【单选题】
---Excuseme.HowdoIgettoPorterStreetfromhere?---__________.You’dbetterasksomeoneelse.
①
Well,it’snottoofaraway.
②
Doyouaskme?
③
I’mnotfromaroundhere.
④
Pleasedtomeetyou.
【单选题】
---Excuseme,sir.WhereisProf.Smith’soffice?---_________________.
①
Youcan’taskme
②
Pardon,Ihavenoidea
③
Pleasedon’tsayso
④
Sorry,Idon’tknow
【单选题】
—Excuseme,couldyoushowmethewaytothenearestpostoffice?—_______Oh,yes!TwoblocksawayfromhereattheGreenAvenue.Youcan’tmissit.
①
Ibegyourpardon?
②
Whatdoyoumean?
③
You’rewelcome.
④
Mm，letmethink.
【单选题】
A: Here you are, 100 yuan. B: Thanks.[填空]. Next one, please.
①
Thats all
②
Wait a minute
③
Its a good deal
④
Heres your change
【单选题】
文法G【S】=（{b}，{S，B}，S，{S→b│bB，B→bS}），该文法所描述的语言____。
①
L(G[S])={b2i+1│i≥0}
②
L(G[S])={b2i+1│i≥1}
③
L(G[S])={bi│i≥0}
④
L(G[S])={b2i│i≥0}
【单选题】
若REPLACE（S，S1，S2）表示用字符串S2替换字符串S中的子串S1的操作，则对于S=“Beijing＆Nanjing”，S1=“Beijing”，S2=“Shanghai”，REPLACE（S，S1，S2）=（ ）。
①
“Nanjing＆Shanghai”
②
“Nanjing＆Nanjing”
③
“ShanghaiNanjing”
④
“Shanghai＆Nanjing”