下列有关试带法测酮体的叙述，错误的是（）。 A.膜块中主要含有亚硝基铁氰化钠 B.不

（8分）如图所示为实验室制取少量硝基苯的装置。根据题意完成下列填空：

（1）写出制取硝基苯的化学方程式       。

（2）长玻璃导管兼做冷凝管，冷凝的是   （填“物质名称”）。

（3）用胶头滴管吸取少许上层反应液，滴到水中，当观察到油珠下沉时，表示硝 基苯已生成。这样操作的理由是   。

（4）将除去混酸后的粗硝基苯先用冷水洗涤，再用10%碳酸钠溶液洗至不显酸性，最后用水洗至中性。洗涤和分离粗硝基苯的仪器是（填仪器名称）。检验最后用水洗至中性的操作是 。

（5）经上述洗涤的硝基苯中仍含少量的间二硝基苯等杂质，提纯硝基苯的方法是   。硝基苯有毒，如果少量的液体溅在皮肤上，应用   擦洗。

A．苯

B．酒精

C．硫酸

D．水

上七年级的盛鹏同学数学成绩一直不好，每次考试都不及格。妈妈要求盛鹏在这次的期末考试中要考到90分以上，否则下学期就让他退学。你认为妈妈的要求[ ]

A、合理，应当给盛鹏施加压力

B、合理，压力越大，动力就越强

C、不合理，超过了盛鹏目前的承受能力

D、不合理，妈妈不应该给盛鹏施加压力

阅读理解。

     We all know that money can't make us happy, but many times we act as if we'd be

happier with a bit more money. We are conditioned to want to be richer; we are trained

to want the latest style that television tells us; we want to earn more money because then

we'll have a good life.

     But none of that will make us happier. And the sad thing is that it can take us decades

of pursuing (追求) wealth and expensive things before we realize that. So what will bring

us happiness? Luckily, there are three things that don't cost anything. Here they are:

     Good relationships. We have a human need to be close with other human beings. Having

good, supportive friendships, a strong marriage or loving relationships with our family members

will make us much more likely to be happy. Therefore, take time, today, to stay with your

loved ones, to tell them what they mean to you, to listen to them, and to develop your r

elationships with them.

     Positive thinking. Optimism(乐观) is one of the best indicators of people who lead a

happy life. Happy people feel empowered, in control of their lives. So why not make

positive thinking a habit? In fact, this should be one of the first habits you develop.

     Flow. This is a popular concept on the Internet these days 一 the state we enter when

we are completely focused on the work or task. Having work and leisure(休闲)that gets

you in this state of flow will almost undoubtedly lead to happiness. People find the greatest

enjoyment not when they're passively mindless, but when they're absorbed in a mindful

challenge.

     If you are interested in some kind of work and keen on some kind of hobbies, it is not a

bad idea. Turn off the TV 一 this is the opposite of flow 一 and then go outside and do

something that truly makes you active.

管理部门对系统的要求是BSP设计的出发点，所以要确定管理部门对系统的要求，具体方法是______。

对麻疹早期诊断最有价值的特征性依据是( )

A．高热起伏
B．咳嗽频繁
C．目泪汪汪，畏光红赤
D．麻疹黏膜斑
E．玫瑰色斑丘疹