Do you know anything about airport security(安全)? In order to protect passengers, airports have 【小题1】________rules. Some of these rules include:
Restricted items
【小题2】________ are not allowed on board. In the past, knives under four inches were allowed on board, 【小题3】________ now, knives are not permitted at all.
ID checks
All passengers must have ID cards 【小题4】________ match their boarding passes. Passengers are unable to fly【小题5】_________these documents.
Security on the aircraft
Generally, 【小题6】________ are not permitted to enter the cockpit, where the pilot sits, 【小题7】________when the plane is in the air. In order to increase security, bullet-proof doors and locks are now standard on all planes.
Forbidden liquids
No liquids over 100ml may be 【小题8】________ on board in hand luggage. Liquids 【小题9】______ 100ml must be carried in a clear plastic bag. This 【小题10】________water, shampoo, toner etc

A crow(乌鸦) is about twenty inches(英寸) long and black all over. Crows are dirty birds because they live on bad food. Crows eat a lot of waste food. In this way they are more useful to us than any birds. They clean up the dirty things in our streets. Crows are always hungry. They look for food all day, and in the evening you can see them in large numbers flying back to their nests(巢) in the trees. They sleep there at night.
Crows are much noisier than other birds. Very often a large number of crows will get together on one house and talk. Sometimes they talk together, and sometimes they do it by turns(轮流) like human beings(人类). It is easy to tell(判断) from crow’s sound if they are pleased or angry. Perhaps crows talk a lot because they are friendly birds. A pair of crows will live together all their lives, and if one of them dies, the other one becomes very sad and quiet for the rest of its life and some time later it dies too.
【小题1】Crows “live on bad food” means “ _________ ”.

Televisions were among the most talked-about things at CES 2013—the 2013 International Consumer Electronic Show (国际消费类电子产品展销会) last week in Las Vegas, Nevada. They were bigger and better with some of the highest technology (技术). Some TVs used a new technology called OLED. They were bigger, thinner and lighter, offered better colour and were brighter than traditional TVs using LED.

Ultra High Definition TVs were also popular. Most of the TVs shown on the exhibition used 4k technology.

Smart TVs this year were smarter. Many offered technology that users have a more personalized （个性化的）experience. One such TV from TCL can know who is watching with the help of new technology. Then it can offer programmes according to the user’s usual interest. Another TV from Panasonic offers  a similar personalized user experience.

Size also played an important part in CES 2013. TVs changed in size from big to bigger, with at least two companies —Samsung and Hisense —showing TVs that are 110 inches large on the exhibition.

The yearly CES is the biggest technology show in North America and one of the biggest in the world.

It’s a meeting of the brightest minds and the top leaders from many industries and those who want to know about the future.

Digital health and fitness inventions were also big at CES 2013. There was even a fork that tells you when you are eating too fast.

The show had over 3,200 different companies showing more than 20,000new products in about 26 miles of exhibition space.

1.Which difference between OLED and LED is NOT mentioned in the passage?

A. Weight         B. Colour          C. Size             D. Price

2.The writer takes TCL and Panasonic for example to tell us _________.

A. smart TVs were smarter at CES 2013

B. Ultra High Definition TVs were popular at CES 2013

C. size played an important part in CES 2013

D. digital health and fitness inventions were big at CES 2013

3.From the passage, we can know __________.

A.CES 2013 has not been held yet

B. TVs at CES 2013 were smaller than before

C. many companies attended CES 2013

D. no leaders from industries appeared at CES 2013