下列依据实验目的所设计的实验操作中,正确的是( ) 选项实验目的实验操作 A.检验

题型:多选题

问题:

下列依据实验目的所设计的实验操作中,正确的是(  )

选项实验目的实验操作
A.检验一瓶气体是否为CO2将燃着的木条伸入瓶内
B.除去CO2中的CO点燃
C.除去衣服上的油渍用洗洁精和水洗涤
D.鉴别无水酒精和NaCl溶液测导电性

A.A

B.B

C.C

D.D

考点:化学实验方案设计和实验现象的分析
题型:多选题

鼻咽癌描述错误的是()。

A.鼻咽癌好发于鼻咽顶后壁和咽隐窝

B.EB病毒血清学检查可确诊

C.首次鼻咽活检是阴性不可排除鼻咽癌

D.鼻咽癌临床表现复杂多变

E.鼻咽癌早期可有颈部淋巴结转移

题型:多选题

阅读理解。

     Kelly Reeves was getting ready for a trip when her phone slipped into a sink full of water.

Panic moment! She quickly picked up the wet phone and tried to turn it on, but nothing worked.

Her first reaction? She got dressed, drove to the nearest store, and bought a new model at full price.    

     A new study finds that fear of losing your phone is a common illness. About 66 percent of those

surveyed suffer from nomophobia or "no mobile phone phobia". Interestingly, more women worry

about losing their phone than men.    

     Fortunately, there's a solution.    

     The first step is to figure out if you have nomophobia. Checking your phone too often is one thing,

but the true sign of a problem is that you can't conduct business or go about your routine when the fear

becomes so severe.    

     Do you go to unusual lengths to make sure you have your phone? That's another sign of a problem.

If you find you check your phone plenty of times per hour, or a total of an hour per day, there may be

a problem.    

     Some of the treatments are similar to those for treating anxiety attacks: Leaving the phone behind

and not checking e-mail or text messages, and then learning to tolerate the after anxiety. Even if this

leads to a high level of worry and stress, the solution is to push through the fear and learn to deal with

not having your phone.    

     Of course, there are also technological alternatives. Luis Levy, a co-founder at Novy PR, says he

uses an application called Cerberus that can automatically track the location of his phone. To find it, he

can just go to a Web site and see the phone's location.    

     He also insures his phone through a service called Asurion. The company's description of its product

reads like a prescription for anxiety: "60 million phones are lost, stolen or damaged each year. You'll

have complete peace of mind knowing that your phone is protected and you can quickly reconnect

with family,friends and work, as soon as the very next day!"

1. Why does the author mention Kelly's experience in the first paragraph?

A. To introduce the topic for discussion.

B. To inform us that mobile phones are useful.

C. To warn us that we should be careful.

D. To tell us we should get phones ready for a trip.

2. The underlined word "nomophobia" in Paragraph 2 means ________.

A. Habits of using mobile phones.

B. Fear of losing mobile phones.

C. Eagerness for new mobile phones.

D. Independence of mobile phones.

3. Which of the following is a way to treat nomophobia?

A. Avoiding using phone for some time

B. Learning more about modern technology.

C. Protecting one's phone against any damage.

D. Not using a mobile phone in one's daily work.

4. Why can the service called Asurion help to treat nomophobia?

A. It lets you know other people also lose their phones.

B. It will give you a new phone through insurance.

C. It enables you to reconnect with your acquaintance.

D. It gives you a prescription to treat nomophobia.

5. What is the passage mainly about?

A. Attitude toward mobile phone.

B. New mobile phone technology.

C. Disadvantages of mobile phone.

D. Solutions to nomophobia

题型:多选题

以下哪些是Arcon型架的特点()。

A.髁导盘位于上颌体,髁球位于下颌体

B.髁导盘位于下颌体,髁球位于上颌体

C.是一种全可调的架

D.模拟开闭口时,颌间距离的改变会导致髁导斜度的改变

E.不可以在架上升高或降低颌间距离

题型:多选题

什么叫计算机网络?计算机网络的功能主要有哪些?

题型:多选题

记忆力差,遇事善忘为( )

A.健忘
B.癫病
C.郁病
D.痴呆
E.狂病

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