【单选题】
Our hopes ___ and fell in the same instant.
【单选题】
Our children ( ) the same high school.
【单选题】
有文法G=({S},{a},{S→SaS,S→e},S),该文法是____。
【判断题】
When the war was over, the young people turned their energies in both Europe and America to the destruction of an obsolescent 19th century society.
【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)=( )。
【单选题】
在一般线面基数的计算中,若已知S底,S房那么S结为()。
【单选题】
( ) to make a long and exhausting trip to a strange country, I prefer to be a sofa potato in the coming 7-day vacation.
【单选题】
Look,someone is coming. Guess who it_________be?I think it______be Tom.I dont think it______be_______.
【单选题】
若有变量说明:chars,s1[20];执行语句:s=student;s1=s;正确的叙述是:()。
【单选题】
Nothing must be allowed to ____ with our plans for the weekend.