问题 选择题

下列说法正确的是(    ).

A.两个多边形的对应角相等则它们是相似形

B.两个多边形的对应边的比相等则两个多边形相似

C.所有的等腰直角三角形是相似形

D.有两组对应边相等的两个等腰三角形是相似形.

答案

答案:C

两个多边形只有当满足对应角相等且对应边成比例时才相似,所以A、B错误;C正确;两个等三角形只有两组对应边相等,不一定相似,还需要它们的夹角相等,所以D错误.

单项选择题 共用题干题
阅读理解

Part-time Front Desk Position
, a book development company, is looking for a part-time front desk office worker. This position is perfect for a person who is cheerful, dependable, and pleasant to work with. Also, you should be able to welcome guests, redirect phone call, and take messages. More importantly, you can stay cool under pressure. You are expected to work 5:00--6:00 pm weekdays. You need to fill in some forms if you are interested.
Forms can be collected at
866 United Nations Plaza, #525
New York, NY 10037
 
               Important Points to Remember When Swimming
·Wait at least an hour after meals.
·Follow the advice of lifeguards.
·Don’t dive into unknown waters. Always swim in line with the
·Find out at the seaside when and where it is safe to swim.
·Don’t use floating toys on the water. Wind can easily sweep them out to sea.
·Get out of the water if you feel tired or cold. Cold can kill even strong swimmers.
Help Telephone:212-543-5902
Atlantic City Beach Office
 
Arrive on time.
Introduce yourself in a polite manner.
Read company materials while you wait.
Have a firm handshake.
Listen.
Use body language to show interest.
Smile and nod to the interviewers.
Ask about the next thing you should do.
Thank the interviewer.
Write a thank-you letter to anyone you have spoken to.
For more information, please visit jobweb.com
368 Cooper Square, New York.
小题1:If you want to work in an office, where can you get the forms to fill in?
A.jobweb.comB.Atlantic City Beach Office.
C.368 Cooper Square, New York, NYD.866 United, New York, NY 10017.
小题2:What does a person need most to be the one-hour weekday job?
A.He should he cheerful, dependable, and easy-going.
B.He has to work from Monday to Friday.
C.He can remain calm in a difficult situation.
D.He can welcome guests and deal with phone calls.
小题3:According to the above information, what is the right thing to do when you?
A.To keep close to the beach.B.To dive into unknown waters.
C.To use floating toys on the water.D.To swim soon after lunch.
小题4:The best title for the last piece of information would be_________.
A.Tips on Showing Interest in a JobB.Stops to a Successful Interview
C.Advice on Introducing Yourself PolitelyD.of Body Language in an Interview