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问题 单项选择题

It is dangerous to（）in present position.

A.remain

B.remaining

C.be remaining

D.be remained

答案

参考答案：A

选择题
下列各组函数中，相等的是（　　）
A．f（x）=
(x+3)(x+5)
x+3
，g（x）=x+5		B．f（x）=x，g（x）=
x2
C．f（x）=x2-x+1，g（t）=t2-t+1D．f（x）=（
2x-5)2
，g（x）=2x-5
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问答题

多读几遍，再理解诗句的意思。

春日     

（宋）朱熹    

 胜日寻芳泗水滨，     

无边光景一时新。     

等闲识得东风面，     

万紫千红总是春。     

句意：（试着说一说）

                                                                                                                                                 

                                                                                                                                                  

                                                                                                                                                  

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