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I Match the two halves of these sentences.

IV Fill in the gaps in these sentences with a suitable verb. Use either the Present Perfect or Past Simple. | IV Complete each sentence using the correct preposition. | Present passive | III Read the situations and complete the sentences. Use a comparative form. | V Translate from Russian into English. | V Translate the following sentences from Russian into English using the | Computing Support Officer | IV Put the verb in brackets into the correct form. | IV Use the correct form of the Participle of the verbs given in the brackets. | I Rank these predictions according to how certain the speakers are. Put the most certain at the top and the least certain at the bottom. |


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  1. A Decide which of these statements are true (T) or false (F).
  2. A Listen to the dialogue. Match the columns to form the dialogue.
  3. A new book predicts that climate change is likely to be abrupt and cataclysmic—and that these sudden shifts could cripple national economies.
  4. A) Look at the table below and match the problem with its effect.
  5. A) Match the beginnings and endings of the sentences to make a summary of what Carl says.
  6. A) Read the article to find the answers to these questions.
  7. A) Try to answer these questions.
1.When used as a non-specific reference,   2. Once the IDU is powered up,   3. The Supervisor program loads other parts of the OS into memory   4. The network layer keeps a copy of each packet   5. The virus can use a reproduction routine to infect other programs   6. This pipe is always available   7. Before a function can be used,   8. These buffers provide space for data to accumulate a. it performs self test and then enters ”Status Display” mode. b.until it arrives at the next node undamaged. c. a USB device is either a hub or a function.   d. when they are needed.   e. once a device is powered and has received a bus reset.   f. until it is time for a transfer to move over the USB.     g. it must be configured by the host.   h. until the computer is switched off.

II Fill in the gaps with the appropriate words. Use: as / before / once / when / until

1. The session layer holds the parts of the message …… the message is complete and sends it to the next layer.

2. …… setting the radio loop, the transmitter power should be switched to maximum level.

3. Most pipes come into existence …… a USB device is configured.

4. The endpoints with endpoint number zero are always accessible …… a device is attached, powered, and has received a bus reset.

5. The device driver requests a new IRP with the buffer …… the current buffer is exhausted.

6. Full-speed disconnect detection is disabled …… the port has been in full-speed idle for 4.0 ms.

7. If the host receives a corrupted data packet, it may require additional wait time …… sending out the next token.

8. Each transaction begins …… the Host Controller sends a USB packet describing the type and direction of transaction, the USB device address, and endpoint number.

 

III Link each pair of actions using a time clause.

1. a Data integrity is required. / b An error recovery procedure may be invoked in hardware or software.

2. a Control data is used by the USB System Software to configure devices. / b They are first attached.

3. a An IRP is available. / b Its data will be transferred at the next allocated period.

4. a The current buffer is exhausted. / b The other buffer is guaranteed to be ready.

5. a The operating system gains control. / b It is responsible to fully configure the bus.

6. a A USB device’s function may be used. / b The device must be configured.

7. a Endpoints other than those for the Default Control Pipe cannot be used. / b The device is configured as a normal part of the device configuration process.

8. a Upon command, a port’s transceiver must enter the high-speed receive mode and remain in that mode. / b The exit action is taken.

 

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V Translate from English into Russian.| IV Correct one mistake in each sentence.
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