语法检查键操作中代码1-2是显示输出指令OUTT或C后面漏掉设定常数为（）
A、X
B、Y
C、C
D、K
参考答案：D
单词拼写
1. The room was filled with smoke and it was becoming difficult to b__________.
2. His father's death came as a complete s__________ to all of us.
3. I'm sorry you have m__________ such a wonderful film.
4. The boy __________(绊倒) over a cable and broke his foot.
5. You must be very __________(健康) if you do so much running.
