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问题 选择题

16的平方根是（　　）

A．4

B．±4

C．-4

D．±8

答案

∵（±4）2=16，

∴16的平方根是±4．

故选B．

选择题

He told me about the        news in a        voice.

A．amazing; surprising

B．amazed; surprised

C．amazing; surprised

D．amazed; surprising
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看图，照例子写句子。
例：
1. Is she a waitress?  Yes, she is.                
    She goes to work by bus.		      

2.                                                            
                                                               

       
3.                                                            
                                                               		      

4.                                                            
                                                               

   
5.                                                            
                                                               		            
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