Переведите предложения, уделяя особое внимание способам образования отрицательной формы английского предложения.

a

1. The entropy of activation does not matter.

2. It did not take them more than two hours to carry out the test.

3. This usage is not followed in carbohydrate chemistry.

4. We do not question the producibility of our results.

5. Until 1960 this reaction was unknown.

6. No surface is absolutely smooth.

7. The contradiction did not prevent them to come to the same view.

b

1. It not infrequently happens that a large phage population contains a few variant phage particles.

2. Our experiments indicate that rearrangement is unlikely but not impossible.

3. Today it seems certain that a given ion does have a definite mobility, one that does not change with time.

4. It does not seem unreasonable to expect that crystallite size should have an influence.

5. Correspondingly large shifts of equilibrium are therefore not unexpected.

6. It was obviously undesira­ble, if not impossible.

7. His definition of the problem satisfies no requirements mentioned above.

c

1. Nothing good resulted from our actions.

2. The problem interested no one.

3. They do not take account of this difference.

4. In other words, when feedback is perceived, it exists; when it is not, it fails to exist.

5. A relay mechanism may fail to perform a command.

6. These findings do not preclude the possibility.

7. No additional logic instruction test is included.

d

1. We conclude that these equations are not similar.

2. We could not conclude this section without giving the comparison of the two methods.

3. The available resources will not exclude reproduction of the experiment.

4. The categories mentioned do not exclude each other.

5. First vectors should be constructed which both satisfy and fail to satisfy the requirement.

6. The two models X_t and X₂ do not occlude each other.

7. He used no auxiliary material.