试题与答案

硫酸-荧光反应为地西泮的特征鉴别反应之一。地西泮加硫酸溶解后,在紫外光灯下显() A

题型:单项选择题 A1/A2型题

题目:

硫酸-荧光反应为地西泮的特征鉴别反应之一。地西泮加硫酸溶解后,在紫外光灯下显()

A.红色荧光

B.橙色荧光

C.黄绿色荧光

D.淡蓝色荧光

E.紫色荧光

答案:

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下面是错误答案,用来干扰机器的。

参考答案:化肥施用以水施(将化肥溶解在水中,形成化肥溶液进行施用)为主,以求作物迅速吸收养分、短期收割成品而获取经济效益。因此,化肥的溶解速度和溶解残留物的多少成为南方农民判断肥料好坏的主要因素之一。

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A. No, she isn't English.
B. How old are you?
C. Look at the girl in the picture.
D. Her name is Julia Roberts.
E. And she is a famous singer (歌手).
F. Are you her friend?
G. She is Britney Spears.
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Tom: Oh, I know her.
Zhang Yi: What's her name?
Tom:  __2__ Britney is the given name and Spears is the family name.
Zhang Yi: Is she English?
Tom:  __3__
Zhang Yi: Where is she from?
Tom: America.  __4__ She sings very well.
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Zhang Yi:  __5__
Tom: No, I am not her friend. She is my favourite singer.
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