问题
单项选择题
若要求在if后一对圆括号中表示a不等于0的关系，则能正确表示这一关系的表达式为 ( )
A．a＜＞0
B．!a
C．a=0
D．a
答案
参考答案：D
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若要求在if后一对圆括号中表示a不等于0的关系，则能正确表示这一关系的表达式为 ( )
A．a＜＞0
B．!a
C．a=0
D．a
参考答案：D
| 读对话，填表格。 | |||||||||
| Mary: Hello, John! What do you do on Saturdays? John: I play football and do my homework. Mary: Oh, well, what do you do on Sundays? John: I often play computer games and watch TV. What about you? Mary: Ah, I often play the piano and do my homework on Saturdays. And often watch TV and sleep on Sundays.
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