问题 多项选择题

以下产生2.4GHz电磁波的设备是().

A.蓝牙手机

B.微波炉

C.传统固定电话

D.AP

答案

参考答案:A, B, D

读图填空题
补全对话,情景问答

完成对话。

A: (1)                                                                                                                           ?

B: Go down this street, take the third crossing on the left, Then go straight ahead. Go past the supermarkt. 

    Walk about three blocks. You will see the post office is between the bank of China and the bookstore.

A: (2)                                                                                                                           ?

B: It's about fifeen minuts' walk. It's late now. you'd better take a bus.

A: (3)                                                                                                                            ?

B: No. 49 bus.

A: (4)                                                                                                                            ?

B: It will take you about five minutes to get there.

A: Thanks a lot.

B: (5)                                                                                                                             .