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13. Read the text again and make notes about the features of cDs, dvDs and Blu-ray discs:

Capacity and formats

Possible uses

CD

DVD

Blu-ray

LANGUAGE WORK: CONNECTORS

14. Look at these extracts from the text and put the words in italics into the correct column of the table:

1. They are therefore ideal for multimedia applications.

2. Furthermore, optical discs are not affected by magnetic fields.

3. However, they are very different in internal structure and data capacity.

4. As a result, a CD can hold 650-700 MB, whereas a basic DVD can hold 4.7GB.

5. In addition, a DVD can be double-sided and dual layer.

Indicating addition

Making contrasts

Explaining the results or effects of something

15. Look at the help box and check your answers. How do you say these connectors in your language?

HELP box

Connectors

We use connectors for the following purposes:

• Indicating addition

furthermore in addition besides moreover and

• Making contrasts

however whereas although but on the other hand

• Explaining the results or effects of something

therefore as a result so thus consequently because

16. Choose the correct word in brackets to complete these sentences:

1. (Although/Consequently) CDs and DVDs are similar in size and shapе, their data structure is very different.

2. DVDs hold more data than СDs. The pits burnt into the disc are smaller than on a CD, and the tracks are closer together. (On the other hand / As a result), DVDs can have up to four recording layers.

3. A Blu-ray disc drive costs a lot of money (but / so) you should use it carefully.

4. Blu-ray is expected to replace DVD over the coming years (because /besides) it offers much greater storage capacity.

5. Both Blu-ray (and / in addition) HD-DVD devices are backward-compatible with current CDs and DVDs, meaning you can play your old discs on the new players.

6. Sony has invested millions of dollars in the development of Blu-ray technology. The success of Blu-ray is (whereas / therefore) vital for the company’s future.

Choosing Storage Devices

17. In pairs, look at the products in the computer catalogue and choose the most suitable device for the purposes (1 -6). Give reasons for your choices. Try to use some connectors from the help box:

1. to keep the operating system and the programs on a home computer

2. to watch a movie on a plane or in the back seat of a car

3. to hold your favourite photos and music

4. to make backup copies and to transport files between computers in a big company

5. to hold historical records in the National Library

6. to read, write and re-write high-definition video and TV

Seagate hard drive

Superfast 8ms hard drive. Capacity ranges from 80GB to 1TB.

Iomega portable hard drive

160GB, 2.5" external hard drive. An affordable way to back up all your data, from business documents to emails.

LaCie DVD drive

16x DVD writer with free Nero DVD burning software. Can play and record both DVD+R and DVD-R discs, plus their rewritable counterparts, as well as all types of CD.

Panasonic portable DVD player

8" portable LCD DVD Player with Car Kit. Compatible with DVD-Video, CD, JPEG image CD and МРЗ-formatted audio CD.

Sony Blu-ray disc drive

Sony’s Vaio AR laptop is the first portable Blu-ray studio, which includes a Blu-ray disc drive and a TV tuner, alongside a 17" widescreen display and a 2GHz Intel Core Duo processor.

Toshiba USB flash drive

High-speed 16GB pen drive with a built-in MP3 player. Plugs directly into any USB connection.

USEFUL Language

For this use, the... is the most appropriate because...

The... has ...so I’d choose it for...

However, ...is good for... because...

In a big company, it would be a good idea to

Well, that depends on...

I agree / I disagree.

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