This is our classroom. It is a new room. (1)There are four windows in the walls. The walls are white. There is a map of China on the back wall. (2)教室里有五十五张桌椅。They are for our students . There is a big desk over there, too. It’s the (3)___________ desk. We like all our teachers very much.

1、将(1)处的英文译成汉语。   

2、将(2)处的汉语译成英文。

3、在(3)处的空白处填上适当的单词。                                        

4、从文中找出与下列句子意思相近的句子：The room is new.

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5、给文章加上合适的标题：                                 

对于分光光度分析操作中除下哪一条外，均可提高结果的准确性（）。

A.选择分析波长位于最大吸收波长处

B.加入适当的缓冲溶液，掩蔽剂等，并在稳定时间内进行测定

C.选择合适的参比溶液

D.选择较厚的比色皿