Which of the following is true about doughnuts?
A. It was first made by the French.
B. The soldiers invented them in World War Ⅰ.
C. Only soldiers eat them in the Untied States.
D. It is round with a hole in the middle.
第1题:
I ()supper when I()someone knocking at the door.
A、made . . . Heard
B、made . . .was heard
C、was making . . . was hearing
D、was making . . . heard
第2题:
19、已知“t=(True)”,则t是一个元组。
第3题:
对于集合S,T,若有S <= T为True,则下列表达式一定为True的是
A.S | T <= S
B.S - T <= S
C.S & T <= S
D.S ^ T <= S
第4题:
下列语句在控制台上的输出是().if(true)System.Console.WriteLine("First");System.Console.WriteLine("Second");
A. FirstSecond
B. First
C. Second
D. 无输出
第5题:
已知“t=(True)”,则t是一个元组。
第6题:
4、对于集合S,T,若有S <= T为True,则下列表达式一定为True的是
A.S | T <= S
B.S - T <= S
C.S & T <= S
D.S ^ T <= S