受热时软化成型，冷却后固化，但一经固化后，就不能用加热的方法使之软化的塑料，属于

阅读理解。

     There are many online food shopping sites (场所). This is very surprising. Things like CDs, books, and

DVDs sell well online. But it is quite different to sell food online because people like to see food with their

own eyes. It is very important for people to buy fresh fruit and vegetables. Customers like to choose their

food by its colour. They also want to touch and smell it. But some people like to go to the same shop to buy

food, because they think the food there has a very good quality. So if the food is always good, they may also

feel comfortable buying it online.

    Boxes of fruits and vegetables have been delivered (递送) to homes around Britain for a few years now.

Dried or canned (罐装的) foods are almost always the same, but things like apples are not. People may want

to choose their own apples so they can take the ones that aren't bruised (碰伤) or the ones that look nice.

Buying dried and canned food online is easier. A person can buy this kind of food on the Internet and then

buy fruits and vegetables at a store or a market.

    Now people can also buy food through supermarket websites. There people can find most of the things

that supermarkets usually sell. Other food websites sell different types of food. Some sell food from one

part of the world such as Asia. Others sell food that is hard to find in supermarkets. There are also websites

that sell sweet foods such as cakes and candies.

     The food is usually delivered by the next day or even on the same day. People still need to be careful,

though. They must check to see if the food is fresh when they get it. It is a good idea for people to find

out how far away the food is being delivered from. It is also a problem if the company does not use

refrigeration (冷藏) when they deliver food that should be kept cold. If traveling long distances in the

summer to deliver the goods, this is important.

1. When people buy food, they usually ______.

A. choose the colour

B. don't touch or smell it

C. go to different shops each time

D. want to see with their own eyes

2. It is not so easy to buy ______ online.

A. CDs or DVDs

B. books or magazines

C. dried or canned foods

D. apples or bananas

3. If fresh fruit and vegetables ______, customers will buy them online.

A. look nice

B. have a very good quality

C. make people feel comfortable

D. have been put into boxes

4. Which of the following is NOT TRUE?

A. The food you buy online is always fresh.

B. Online shopping can let you get the food today or tomorrow.

C. You can buy cakes and candies online.

D. Some websites may help you buy more things.

5. Which of the following is the best title of the passage?

A. How to choose food

B. Online Food Shopping

C. Supermarket Websites

D. Delivering food

男运动员6名，女运动员4名，其中男女队长各1名，选派5人外出比赛，在下列情形中各有多少种选派方法？

（1）至少有1名女运动员；

（2）既要有队长，又要有女运动员。

固定资产价值重估的方法主要有（）。

A.货币折算法

B.收益现值法

C.重置成本法

D.现行市价法

E.清算价格法

某工程采用的预拌混凝土由承包人提供，双方约定承包人承担的价格风险系数<=5%。承包人投标时对预拌混凝土的投标报价为308元/m³，招标人的基准价格为310元/m³，实际采购价为327元/m³。发包人在结算时确认的单价应为（）元/m³。

A、308.00

B、309.49

C、310.00

D、327.00

档案主要是从公文转化而来的，今天的档案就是昨天的公文。( )