When the plane ____(arrive),some of the detectives ____(wait)inside the main building while others ____(wait)on the airfield.While two detectives ____(keep)guard at the door, two others ____(open)the parcel.

Lesson 6 课文理解 T or F -3Flight information includes weather information, traffic information, airfield information as well as any other information that is likely to affect flight safety.

在while循环中怎么实现无限循环？（） A: while（true）{} B: while（false）{} C: while（!1）{} D: while（!’a’）{}

@while函数的正确使用格式是 A: condition: @while B: @while( ):condition C: @WHILE(CONDITION: ) D: @while{condition}（）

语句while(!e) ; 与语句（ ）等价。 A: while(e!=1) B: while(e==1) C: while(e!=0) D: while(e==0)

while嵌套是指while语句里面还有while语句

下面关于while循环语句条件表达式错误的是（） A: while B: while（x＜=7） C: while（x＜7） D: while（x!=7）

We see each other _____, but not as often as we used to. A: once in a while B: after a while C: in a while D: for a while

以下代码中哪个是正确的 while 循环语句是？ A: while loop a < 10 B: while a < 10: C: while(a < 10) D: while loop a < 10:

设int m；，与while(!m)等价的是( ) A: while(m!=0) B: while(m==1) C: while(m==0) D: while(m!=1)