电冰箱电源一旦中断，要等（）分钟后再接通。A、3 B、4 C、5 D、6_爱下问搜题

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问题单项选择题

电冰箱电源一旦中断，要等（）分钟后再接通。

A、3

B、4

C、5

D、6

答案

参考答案：C

解答题

化简求值：已知x=

，求x²-y²的值．

补全对话，情景问答

选用方框内的句子完成对话。

a. You may ask that policeman.
b. The middle school is on your left.
c. Would you please tell me the way to the No. 3 Middle School?
d. Is that a long walk?
e. Thank you very much.

A: Excuse me.
B: Yes?
A: 1____________
B: Sorry. I don't know. 2____________
A: Excuse me, sir?
C: Yes?
A: How can I get to No. 3 Middle School?
C: Go along this street, and then turn right. 3____________
A: 4____________
C: No, it's about 100 metres away.
A: 5____________
C: That's all right.