【单选题】
已知 int t=0;while(t=1){...}则以下叙述正确的是
【单选题】
She has [填空] orange T-shirt. [填空] T-shirt is nice.
【单选题】
_______ the look on his face, he doesn’t t quite understand what the speaker is saying.
【单选题】
If you don’t go, ____ I.
【单选题】
Don’ t forget to put the book back on the shelf, _____?
【单选题】
14. Don’t turn the lights on, _______you ?
【单选题】
类 Teacher 和 Student 是类 Person 的子类;
Teacher t;
Student s;
// t and s are all non-null.
if (t instanceof Person ){ s=(Student)t; }
最后一条语句的结果是:( )
【单选题】
Don’t make faces in class.____________
④
Sorry, I won’t do it again.
【单选题】
Hedidn’t________andsohefailedtheexamination.
【单选题】
Wedon’t______ourcustomerstobemereconsumers.