The text is mainly about ____.
The main idea／The general idea／The main purpose is ______.
Whats the main point the writer is trying to make in the last
What would be the best title /headline for the text?
This article mainly tells about the story of ____.
What is the topic of the text?
The subject discussed in this text is ____.
What does the second paragraph discuss?
The paragraph (passage) deals with _____.
What is mainly discussed in the text? （二）主旨大意题解题方法与步骤：
PITTSBURGH – For most people, snakes seem unpleasant or even threatening.
But Howie Choset sees in their delicate movements a way to save lives.
The 37-year-old Carnegie Mellon University professor has spent years
developing snake-like robots ，he hopes will eventually slide through fallen
buildings in search of victims trapped after natural disasters or other
Dan Kara is president of Robotics Trends, a Northboro, Mass.-based company
that publishes an online industry magazine and runs robotics trade shows. He
said there are other snake-like robots being developed, mainly at universities,
but didnt know of one that could climb pipes.
The Carnegie Mellon machines are designed to carry cameras and electronic
sensors and can be controlled with a joystick(操纵杆). They move smoothly with the
help of small electric motors, or servos, commonly used by hobbyists in model
Built from lightweight materials, the robots are about the size of a human
arm or smaller. They can sense which way is up, but are only as good as their
human operators, Choset added.
Sam Stover, a search term manager with the Federal Emergency Management
Agency based in Indiana, said snake-type robots would offer greater mobility
than equipment currently available, such as cameras attached to extendable
It just allows us to do something weve not been able to do before, Stover
said, We needed them yesterday.
He said sniffer dogs are still the best search tool for rescue workers, but
that they can only be used effectively when workers have access to damaged
Stover, among the rescue workers who handled the aftermath (后果) of
Hurricane Katrina, said snake robots would have helped rescuers search flooded
houses in that disaster.
Choset said the robots may not be ready for use for another five to ten
years, depending on funding.
What is the text mainly about?
A. Snake-like robots used in industries.
B. Snake-like robots made to aid in rescues.
C. The development of snake-like robots.
D. The working principles of snake-like robots.
学海导航：B 该题是考查文章的主旨大意。文章的第一段只是引出这一话题，第二段才是本文的主题，第二段中提到Choest讲究 snake－like
robots是因为he hopes will eventually slide through fallen buildings in search of
victims trapped after natural disasters or other emergencies，由此可知，Choset
Everyones at it, even my neighbors. I thought I might be the only person
left in the world who hadn't done an eBay deal. So, I decided to try my hand at
Buying for beginners: Sign up on www. ehay. co. uk. Most items (e.g.
tables, computers, and books) ready for auction will come with a picture and a
short description; others may be marked with Buy It Now and have a fixed price.
You can buy these right away.
If the item is being auctioned, you offer the highest price you are
prepared to pay and eBay bids (出价) for you. The bid will be increased little by
little until it goes beyond your highest bid, then you are emailed and asked if
you would like to bid again. Auctions last up to 10days and when they finish you
get an email telling you whether you have won the item.
How to pay: Sellers decide how they would like to be paid and you need to
check this before placing a bid as you might not want to post a cheque or postal
orders. The easiest way is through PayPal, an online payment system that takes
the money away from your credit card (信用).
Selling made simple: If you plan to sell on eBay, it helps to include a
picture of the item. I followed my friends' advice and put up the items I wanted
to sell for a 10-day auction, starring on a Thursday. This way buyers had two
weekends to bid.
The big things in life: It' s easy to post a small item, but furniture is a
big part of eBay and this has to be collected or sent by deliverymen. Cheek
the ways of delivery before you bid.
What is the passage mainly about?
A. How to make payment online.
B. Ways of making delivery online
C. Advantages of an online-auction system.
D. How to use an online-auction system.