问题 选择题

某人平静时的胸围长度是85cm,尽力吸气时的胸围长度是95cm,尽力呼气时的胸围长度是83cm,这个人的胸围差是(  )

A.2 cm

B.8 cm

C.10 cm

D.12 cm

答案

胸围差指的是尽力吸气结束时的胸围的长度与尽力呼气结束时的胸围长度的差,胸围差我们一般取测得的三次胸围差的平均值.此题指提供了一次,尽力吸气胸围差为95厘米,尽力呼气时胸围差是83厘米,二者之间的差是:95厘米-83厘米=12厘米,所以某人的胸围差是12厘米.

故选D.

阅读理解

阅读理解。

     Many students want to find friends on the Internet as a way of practising their language skills and learning

more about new cultures. Traditional pen pals were the main source (起源) of such contacts, and students

could write to each other. With the Internet, finding friends has become much easier, and such relationships

are called keypals.

     However, careful thinking should be given when finding friends on the Internet:

     First, search the Internet for famous services. Look for reviews of such sites to learn more about other

students' experiences. Don't join a service until you have done your research.

     Second, check to see if you can use a false name, rather than your real name, to protect your identity.

Never give personal information to anyone, including your home address, phone number and birthday.

     Third, stop contacting others if you feel uncomfortable with the topics of conversation. Tell your teachers,

parents, or even the local government if you find that you are in danger.

     And finally, try to use the language you are studying in the classroom in your communications with others.

Ask proper questions that will also help you learn about other cultures. Remember that one's personal

experience might be just that: To understand a whole culture, you have to talk to many people, but this will get

you started. Good luck.

1. If you are not comfortable with the topics,you should _____. [ ]

A. talk about something else with others

B. stop communicating with others

C. ask your teachers or parents for advice

D. tell him to stop talking about the topics

2. The underlined word"identity" probably means _____. [ ]

A. name

B. address

C. family

D. personal information

3. It can be seen from the passage that _____. [ ]

A. the writer is worried about the studens searching the Intemet

B. to know more about a culture,you need to communicate with many people

C. in order to protect yourself,you'd better tell lies on the Internet

D. many people will talk to you if you ask questions about their culture

4. Which of the following is TRUE?[ ]

A. Many students want to make friends on the Internet to practe their English.

B. It's easy to make friends with experienced students on the Internet.

C. Exchange your phone number with your keypals to keep in touch with them.

D. Ask your teachers or parents for help when you find that you are in danger

5. Which of the following would be the best title for the passage? [ ]

A. How to Find Friends on the Internet

B. How to go on the Internet

C. How to Practise Language Skills

D. How to Contact People

单项选择题