下列毒品中,属于致幻剂类的毒品有()。A、氯胺酮 B、氟硝安定 C、LSD D、迷幻蘑菇

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问题:

下列毒品中,属于致幻剂类的毒品有()。

A、氯胺酮

B、氟硝安定

C、LSD

D、迷幻蘑菇

考点:禁毒知识竞赛禁毒知识竞赛题库
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下列电光源中,耐震性能好的有( )。

A.白炽灯

B.碘钨灯

C.高压钠灯

D.氙灯

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除了直角梯形外,梯形的高一定比它的腰短。[ ]

题型:多项选择题

阅读理解。

     Every student wants to learn English well, but how can we learn it well? It's a good topic for English

learners. Here are some good methods, which can help you improve your English quickly.

     First of all, you must have correct attitude. Please love English, not hate it. And you don't feel shy when

you say or speak English. Remember one sentence: Put your face in your pocket.

     Secondly, I think grammar rules, new words and phrases are important, but they are not enough. For

example, some people are quite good at grammar and learned a lot of English words and phrases. But they

can't speak English when they meet foreign friends.

     The most effective (有效的) way to learn English well is to often use English. Don't be afraid and don't

laugh at others. We'd better listen, speak, read and write more. You can go to English corner, talk with

foreigners or talk with your friends. If you have time, listen to the radio or English program. Listening to this

good material can help you improve your listening and understanding. And then, you can read English books,

newspapers or novels. They are wonderful. You can use the internet, chat with net-friends or write E-mails,

dairies …Through these ways, you can get more for your English.

     English isn't so difficult that we can't learn it well. As long as we set our mind to learn English well, I'm

sure everyone will be successful.

1. The underlined sentence "Put your face in your pocket." suggests that _____. [ ]

A. you should love English

B. you should not let others recognize your face

C. you should try not to make mistakes when speaking English

D. You should not feel shy when using English

2. In the writer's opinion, _____. [ ]

A. English learners should not spend time on grammar rules, new words and phrases

B. Grammar rules, new words and phrases are the most important thing for an English learner

C. If you are good at grammar, your spoken English will be bad

D. Learning grammar rules, new words and phrases is only part of English learning

3. The writer gives the following tips EXCEPT _____. [ ]

A. go to English corner

B. communicate with people in English

C. travel in English-speaking countries

D. write English diaries

4. Which of the following can be the best title of the passage?[ ]

A. How to learn English well

B. English isn't difficult

C. Use English often in your life

D. Grammar learning is not enough

题型:多项选择题

下列物体中具有动能的是(  )

A.在水平地面上静止的汽车

B.弹簧

C.在空中飞行的飞机

D.山上静止的石头

题型:多项选择题

EMS的计算机体系结构()

A.开放式

B.集中式

C.分布式

D.标准式

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