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问题 单项选择题

像片调绘中，低等级公路进入城区时，其符号的处理方式是（）。

A.用公路符号代替街道线

B.公路符号与街道线重合表示

C.用街道线代替公路符号

D.公路符号与街道线交替表示

答案

参考答案：C

填空题

定义在R上的函数f（x）=-x-x3，设x1+x2≤0，下列不等式中正确的序号有______．

①f（x1）f（-x1）≤0　

②f（x2）f（-x2）＞0

③f（x1）+f（x2）≤f（-x1）+f（-x2）　

④f（x1）+f（x2）≥f（-x1）+f（-x2）
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补全对话，情景问答
从方框内选出恰当的句子完成下面对话，并将其字母标号填入相应题号前的括号内。
A.Nice to meet you, too.
B.Yes, I think so.
C.Fine , thank you.
D.See you tomorrow.
E.Mum, this is Mr Wang, my teacher.
(Li Fei didn't go to school yesterday. Now Mr Wang is visiting his home.)
Li Fei：Hello, Mr Wang. How are you?
Mr Mang：         1        
Li Fei：Mr Wang, this is my mother.          2         
Mrs Li：Nice to meet you, Mr Wang.
Mr Wang：        3         Li Fei was not at school yesterday. What's wrong with him?
Mrs Li：He's got a cold.
Mr Wang：Oh, I'm sorry to hear that. Are you better today, Li Fei?
Li Fei：Yes, I'm much better.
Mr Wang：Can you go to school tomorrow?
Li Fei：         4         
Mr Wang：OK, have a good rest . See you tomorrow.
Li Fei：          5          
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