问题 单项选择题

TEACHER(讲师)表中列的定义如下:
Name Null Type
-------------------- ---------------- -----------------
TEACHER_ID NOT NULL NUMBER(9)
NAME VARCHAR2(25)
SALARY NUMBER(7, 2)
SUBJECT_ID NOT NULL NUMBER(3)
SUBJECT_DESCRIPTION VARCHAR2(2)
如要将所有教科学的讲师的工资提高8‰科学讲师的subject_id为011,应使用如下的哪个语句

A.UPDATE teacher
SET salary=salary * 1.08
WHERE subject_description LIKE ’SCIENCE’;
B.UPDATE teacher
SET salary=salary * .08
WHERE subject_description LIKE ’SCIENCE’
AND subject_id=011;
C.UPDATE teacher
SET salary=salary * 1.08
WHERE subject_id=011;
D.UPDATE teacher
SET salary=salary+(salary * .08)
WHERE subject_description LIKE ’SCIENCE’
OR subject_id=011;

答案

参考答案:C

解析: 这一题主要是测试对UPDATE语句的理解和熟悉程度。首先根据题目的要求,选项B肯定是错误的,因为“SET salary=salary * .08”是将工资更改为原工资的8%。
参阅TEACHER表中subject_description列的定义,可知这一列的最大长度为两个字符,所以“WHERE subject_description LIKE ’SCIENCE’”子句肯定是错误的,而且在题目中根本就没有说科学(SCIENCE)存在于subject_description列中,所以选项A、B和D肯定都是错误的。因此答案只能是C了。

阅读理解

阅读短文,选择正确答案。

    Do you read newspapers?

    Maybe you think that newspapers are boring and only for grown-ups. But that's not true. 

    There are many interesting stories in the paper. You just need to know what you are looking at. 

    "I spend about half an hour reading newspapers every day", said 15-year-old Guo Binghua from Henan. "What

interests me most are the things happening at schools.

    School news is just one kind of news story in newspapers. There is also news from around the world一from

international problems to pop stars.

    If you read the newspaper carefully, you'll find there're different kinds of articles on the pages:

    News stories

    These stories are about events. Reporters try to show all sides of a story to help readers understand what

happened. Reporters try to speak to as many people as possible. They also use pictures and numbers to

convince readers that the stories are true. Teens has lots of news stories on the news page and front page. When

you read stories, you hear about the facts; not the writers' ideas.

    Opinion (观点) writing

    Opinion writing is usually about something happening right now, But it isn't just facts. Here writers add in

their own opinions. Writers choose only the facts that help back up (支持) their ideas. They are trying to

persuade (说服) readers. This is usually the kind of story that gets people thinking. Go to "Speak Out" on page

two for an example of opinion writing in Teens.

    Advertisement

    You need to watch out for this type! Those sweet words and lovely pictures are just ways to get you

interested in their products (产品)! People have to pay to put advertisements in newspapers

1. How does the writer think students should read newspapers? [ ]

A. They should read them carefully

B. They just need to know what they're interested in

C. They should read again and again

D. They should read different kinds of articles.

2. What's "Teens" in the passage? [ ]

A. Children from 13 to 19 years old.

B. The name of a magazine.

C. The name of a writer.

D. The name of a newspaper.

3. Which group of the followings has different meanings in the passage? [ ]

A. "kind" and "type".

B. "convince" and "persuade".

C. "help back up" and "speak out".

D. "opinion" and "idea".

4. What is the most important for news stories? [ ]

A. True facts

B. Pictures and numbers

C. The writer's ideas

D. Different articles

5. In the passage the writer tells us to _______. [ ]

A. buy the products in the advertisements

B. never to believe the products in the advertisements

C. care for the products .in the advertisements

D. read between the lines

单项选择题