Read the blog and the find the missing sentences.

Объяснение:

В настоящем времени:

Professor says that Alec’s answer was rather good and asks him whether he would answer a few extra questions. Alec answers he’ll try. Professor tells Alec that as he knows, a chip is a miniaturized electronic circuit and asks what elements it does contain. Alec answers that a chip contains several hundred thousand electronic components – transistors, resistors and others. Professor asks if there are any other terms, which are synonymous to chip. Alec answers that there are and that they are integrated circuits and microelectronics. Professor asks Alec what types of chips he can describe. Alec answers that it is Logic chips and Memory chips and that Logic chips perform some or all the functions of a processor and Memory chips are storage cells. Professor asks whether larger computers may use several types of microprocessors and Аlec answers that they may, of course, and that even desk computers use one or more microprocessors. Professor tells Alec that his answer is good so he get a five. Alec thanks Professor and says good-bye to him.

В времени:

Professor said that Alec’s answer had been rather good and asked him whether he would answer a few extra questions. Alec answered he would try. Professor told Alec that as he knows, a chip was a miniaturized electronic circuit and asked what elements it did contain. Alec answered that a chip contained several hundred thousand electronic components – transistors, resistors and others. Professor asked if there were any other terms, which were synonymous to chip. Alec answered that there were and that they were integrated circuits and microelectronics. Professor asked Alec what types of chips he could describe. Alec answered that it was Logic chips and Memory chips and that Logic chips performed some or all the functions of a processor and Memory chips were storage cells. Professor asked whether larger computers might use several types of microprocessors and Аlec answered that they might, of course, and that even desk computers used one or more microprocessors. Professor told Alec that his answer was good so he got a five. Alec thanked Professor and told him good-bye.

10000%

Объяснение:

1. Despite the apparent properties of compound semiconductors, their general use *has not been* great because of several limitations. -

Несмотря на очевидные характеристики составных полупроводников, их общие использование не распространено из-за некоторых ограничений.

*has not been* - Pr. Perfect Active

2. The potential difference across the junction *had been increased".

Увеличена разность потенциалов на переходе.

*had been increased* - Past Perfect

Passive

3. Magnetic amplifiers *have been employed* for some 50 years; transistors *were reported* upon in 1948.

Магнитные усилители используются уже около 50 лет; о транзисторах было сообщено в 1948 ГОДУ.

*have been employed* - Pr. Perfect

*were reported* - Past Simple Passive

4. Sometimes a decision to compute *is followed by a process of selecting the particular kind of computing machine, which best *suits* for the given problem.

Иногда за решением о вычислении следует процесс выбора конкретного типа вычислительной машины, КОТОРЫЙ лучше всего подходит для Данной задачи.

*is followed* - Pr. Simple Passive

*suits* - Pr. Simple Active

5. Our rockets, the first in the world, *were being sent* to other planets.

Наши ракеты, первые в мире, отправлялись на другие планеты.

*were being sent* - Past Continuous Passive

6. This problem *must be approached*

from another point of view.

К этой проблеме нужно подойти с другой точки зрения.

*must be approached* - Present Simple

Passive

7. This job *cannot be done* for a short

period, you *need* at least a month.

Эту работу нельзя делать за короткий срок, нужен минимум месяц.

*cannot be done* - Present Simple Passive

*need* - Pr. Simple Active

8. It *is* 20 years since he *left* home, and he:* has never been heard* of since.

20 лет с тех пор, как он ушел из дома, и с тех пор о нем никто не слышал.

*is* - Pr. Simple Active

*left* - Past Simple Active

*has been heard* - Present Perfect

Passive

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