请用直线将相关的叙述联系起来食道吸收部分水，无机盐和酒精胃消化和吸收的主要器官小

已知全集U={非零整数}，集合A={x||x+2|＞4，x∈U}，则∁_UA=（　　）

A．{-6，-5，-4，-3，-2，-1，0，1，2}

B．{-6，-5，-4，-3，-2，-1，1，2}

C．{-5，-4，-3，-2，0，-1，1}

D．{-5，-4，-3，-2，-1，1}

某破碎分两段，第一段的破碎比为4，第二段的破碎比为8，该破碎系统的总破碎比是多少？

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

某女性，右上腹疼痛，向右肩放散，恶心，呕吐，伴畏寒发热一周，查体：急性病容，腹平坦Murphys阳性，右上腹局部肌紧张，反跳痛，该患者诊断最可能为

A．胆总管结石

B．化脓性胆管炎

C．胰头癌

D．胆道蛔虫

E．急性胆囊炎

什么叫水活度（aw）？它对微生物的生命活动有哪些影响？对人类俄生产实践和日常生活有何意义？