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a)
1) The reactor is fast becoming a major source of heat and electricity .- is becoming - Present Continuous Active
2) Scientists have found ways of measuring the sizes and positions of bodies in the Universe. - have found - Present Perfect Active
3) Astronomers have measured the exact lenght of the day. - have measured - Present Perfect Active
4) Astronomers find that the day is increasing by 002 seconds each century. - find - Present Simple Active; is increasing - Present Cont. Active

б)
1) Elements are transformed into other elements both by man and by nature. - are transformed - Present Simple Passive
2) The launching of Sputnic I was followed by many achievements in science and engineering. - was followed - Past Simple Passive
3) The chemical properties of an element are determined by the orbiting electrons. - are determined - Present Simple Passive
4) As a rule one great discovery is generally followed by numerous others. - is followed - Present Simple Passive

Нужно подчеркнуть модальный глагол или его эквиваленты.

1) Laser light can be used to transmit power of various types. - CAN
2) The application control of digital computers should include all forms of automatic control in science and industry. - SHOULD
3) These new materials had to withstand much higher temperatures than metals. - HAD TO
4) Ethylene gas may be obtainted by cracking petroleum. - MAY
5) We can think of heat as a special form of kinetic energy. - CAN
6) A computer should solve complicated problems many millions of times faster than a mathematical.- SHOULD
7) New types of plastics had to be obtained for space technology. - HAD TO
8) To measure the vast distances between different planets scientists have to use special instruments - HAVE TO

Не забудьте выбрать ЛО! Надоело, что тратишь время, а более 2 млн ответов находятся на голосовании: -(