You __________ come if you don't want to.

A. won't　　　　　　 B. needn't　　　 　　 C. mustn't　　　　　 D. shan't

You 　　　 come if you don’t want to.

　 A．won’t　　　 B．needn’t　　 C．mustn’t　　 D．shan’t

In the future your automobile will run on water instead of gas! You will be able to buy a supercomputer that fits in your pocket! You might even drive a flying car!
For each prediction that has come true today, several others have missed by a mile. Many of these predictions didn’t consider how people would want to use the technology, or if people really needed it in their lives or not. Let’s look at some predictions from the not-too-distant past.
Robot Helpers
Where’s the robot in my kitchen? Nowhere, of course. And he’s probably not coming anytime soon. Robots do exist today, but mostly in factories and other manufacturing environments.
Back in the 1950s, however, people said that by now personal robots would be in most people’s homes.
So why hasn’t it happened?  Probably because robots are still too expensive and clumsy. And maybe the idea of robots cooking our dinners and washing our clothes is just too weird. At home we seem to be doing fine without them.
Telephones of Tomorrow
In 1964 an American company introduced the video telephone. They said by the year 2000 most people would have a video phone in their homes. But of course the idea hasn’t caught on yet.
Why? The technology worked fine, but it over—looked something obvious: people’s desire for privacy. Would you want to have a video phone conversation with someone after you just step out of the shower?  Probably not---it could be embarrassing! Just because a technology available doesn’t always mean people will want to use it.
And finally, how about that crazy prediction of the flying car? It’s not so crazy anymore! But a flying car remains one of the most fascinating technology ideas to capture our imagination. Keep watching the news, or perhaps the sky outside your window, to see what the future will bring.
【小题1】 The whole passage is mainly about ________________.

阅读下列短文，从每题所给的四个选项中，选出最佳选项。

　　Sharon Suarez dreams of the day when she won't have to carry groceries from her car to her house．That day has come．A growing number of people are shopping the aisles of grocery stores on the Internet．

　　“I've never done it，but it sounds great，”Ms Suarez said．“It is so hot here in the summer．It's also really cold in the winter．l would love to stay inside and have the groceries come to me．”

　　Of course，people already buy books，do their banking，and shop for gifts on the Internet．But when they need to shop for food，most still get in the car and go go the supermarket．In fact，fewer than 1 million people have bought groceries online．The average American visits a supermarket 2．2 times a week．

　　Part of the problem is obvious．Many shoppers want to see the food they buy．While they might buy a CD or a book without seeing it，most people don't want to buy produce the same way．They also enjoy going to the supermarket．They like to walk in the aisles，and see what new items are available．Shoppers also worry about spoiled food，large delivery charges，and late deliveries．But，all this is slowly changing．Consumers are beginning to find that buying food online saves them time．And，they're finding that delivery is fast，cheap，and the food is good．

　　“I wasn't sure what to expect when I started ordering online，”said Michael Koklos．Mr Koklos started shopping online when he had to work longer hours．“I never had time to shop．It is really easy and convenient to buy over the Internet．The vegetables are better than ones I would pick out myself，”he added．“And I never have to find a parking space．”

　　While online shopping appeals to a certain group of the people，there will always be some who enjoy shopping for their won groceries．

　　Marti Lavalle，a shopper in a local grocery store，says she'll never shop for groceries online．“I still don't know to use a computer，”she explained．

1．Ms Suarez likes the idea of Internet grocery shopping because________．

[　　]

A．many others are shopping on the Internet

B．It's hot in the summer and cold in the winter

C．she has never done it before

D．she needn't carry the groceries by herself

2．Food shopping online is not as poplar as other types of online shopping NOT because________．

[　　]

A．people want to see the they buy

B．people enjoy going to the supermarket

C．people have a lot of time to spend

D．people like to walk in the aisles

3．What do people think will go wrong if they buy food on the Internet？

[　　]

A．They would spend a lot of money on delivery．

B．They can not find out the new items

C．The food is very expensive on the Internet．

D．They can't pick out the things themselves．

4．If you________，you can't do shopping online．

[　　]

A．can't find a parking space

B．know nothing how to operate a computer

C．don't have a lot of spare time

D．have to work shorter hours

Will life in the future be better, worse or the same as now? Futurologists（未来学家）predict that life will probably be very different in 2050.
First of all, it seems that TV channels will have disappeared by 2050. A computer will send the program directly to the television. On TV screen appear holograms（全息图）, which are pictures with certain height, width and depth. We will be able to see, smell and touch the things that we see on television.
Water has become one of our most serious problems. Agriculture is changing and people are growing more fruit and vegetables to export. Demand for water will increase ten times in 2050. Some futurologists predict that water will be the cause of war if we don’t act now.
In transport, cars will run on new fuels and go very fast. A car will have computers to control its speed and there won’t be any accidents. On the other hand, space planes will take people around the earth in about three hours. People will fly from Los Angeles to Tokyo by space plane in just half an hour.
In the field of technology, robots will have replaced people in factories. By 2050, we will see robots everywhere. They do not ask for pay rises or go on strike, and they work 24 hours a day. 
Medicine technology will have conquered many diseases by 2050; we will be able to help blind and deaf people see again and hear again. Scientists have discovered how to control genes. They have already produced clones of animals and will be able to produce clones of people and decide how they look, how they behave and how much intelligence they have. If you want all this to come true, you should study science and technology hard.
【小题1】What is the main difference between today’s and 2050’s TV?