Fill the blanks with the prepositions by, with, or by means of Sometimes more than one...

Question

Fill the blanks with the prepositions by, with, or by means of Sometimes more than one answer is possible.

1. The lumber was transported ____on_____ train.
2. Current can be varied in a circuit ___________ a rheostat.
3. Earthquakes arc usually caused ___________ the movement of the continental plates.
4. The age of the sample was determined ___________ the carbon 14 dating method.
5. Steel surfaces can be protected ___________ a thin coating of machine oil.
6. The colours of aurora borealis are generated ___________ the effect of solar particles on the various atmospheric gases.
7. The primitive cooling earth was darkened for centuries ___________ hot, dense clouds.
8. The direction of growth of a plant is controlled ___________ light (phototropism).
9. The body temperature of a higher mammal is regulated ___________ the hypothalamus.

Answer 1

by, with, or by means of

2. Current can be varied in a circuit __with__ a rheostat.

3. Earthquakes are usually caused __by__ the movement of the continental plates.

4. The age of the sample was determined __by means of__ the carbon 14 dating method.

5. Steel surfaces can be protected __with___ a thin coating of machine oil.

6. The colours of aurora borealis are generated _by__ the effect of solar particles on the various atmospheric gases.

7. The primitive cooling earth was darkened for centuries __by___ hot, dense clouds.

8. The direction of growth of a plant is controlled __by___ light (phototropism).

9. The body temperature of a higher mammal is regulated __by__ the hypothalamus.

Comments

Большое спасибо. Что я могу для Вас сделать?

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5 предложений на слово Never

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Never say never. It never rains but pours.