女性，68岁，上腹部疼痛不适半年余，近1周加重。上腹部超声检查如图所示，考虑诊断是（

阅读理解。

    Students who say they never or hardly ever used dictionaries often speak English well but usually write

poorly, because they make many mistakes.

    The students who use dictionaries most do not learn especially well either. The ones who look up every

new word do not read fast. Therefore they do not have time to read much. Those who use small two-language

dictionaries have the worst problems. Their dictionaries often give only one or two words as translations of

English. But one English word often has many translations in a foreign language and one foreign word has

many translations in English.

    The most successful students are those who use large college edition dictionaries with about 100,000

words but do not use them too often. When they are reading, these students first try to get the general idea

and understand new words from the context (上下文). Then they read again and use the dictionary to look

up only key words that they still do not understand. They use dictionaries more for writing. If they are not

sure how to spell a word, or divide it into syllables (音节), they always use a dictionary. Also, if they think

a noun might have an unusual plural form, they check these in a dictionary.

1. The writer thinks that _____. [ ]

A. choose a good dictionary, and you'll be successful in learning English

B. dictionaries are not necessary to the students who learn English

C. it is very important for students to use good dictionaries properly

D. using dictionaries very often can't help to improve writing

2. When does the writer advise students to use a good dictionary in the reading? [ ]

A. After the first reading

B. At the end of the reading

C. During the first reading

D. At the beginning of the reading

3. This passage mainly tells us _____. [ ]

A. that students shouldn't use small two-language dictionaries

B. that the small two-language dictionaries are very useful

C. why students should use large college edition dictionaries

D. what dictionary students should choose and how to use it

4. Which is not mentioned in this passage? [ ]

A. How to make good use of a dictionary.

B. How to improve spoken English.

C. When to use a dictionary.

D. How to practise reading fast.

根据<建筑基坑支护技术规程》，下列（）项属于基坑支护的承载能力极限状态。（）

A.支护结构及土体整体滑动

B.影响基坑周边建筑物正常使用的土体变形

C.坑底因隆起而丧失稳定

D.地下水渗流引起土体渗透破坏

在数据库设计中，将E-R图转换为关系模式的过程属于( )。

A．需求分析阶段

B．逻辑设计阶段

C．概念设计阶段

D．物理设计阶段

主变内部严重故障或着火，严禁（），以防止主变爆炸

由其他企业退回的药品应挂（）

A.绿色标牌

B.蓝色标牌

C.红色标牌

D.黄色标牌在人工作业的库房储存药品，按质量状态实行色标管理