VII. Find synonyms and antonyms among these words:

Approach, bottom, broad, small, easy, expensive, artificial, method, often, tiny, right, surface, purpose, hard, wrong, cheap, natural, wide, frequently, goal.

VIII. Translate the chain of word combinations:

внешнее воздействие - promising approach- сканирующий датчик - ion beam ДНК – artificially engineered machines – фиксировать- immerse in water – восприимчивый – carbon nanotubes – высокая производительность – the right chemicals – предел точности

IX. Make collocations. The definition of the missed word is given in brackets.

To make (the way in which the parts of smth are organized )

To raise the (a sentence that asks for information)

High (the act or process of performing a task)

To use (detailed information how to do smth)

A broad (an area)

To be powered (produced in a way of using processes which involve changes of atoms or moleculars)

X. Complete the table with the correct word form

verb	noun
manipulate
	construction
	requirement
demonstrate
	involvment
	engineering

noun	adjective
nature
	different
art
ribosome

XI. Fill in the gaps using the correct word form from ex.IX. Some words are extra ones.

1. The ……… of new machines will take place tomorrow.

2. The natural molecular machines are difficult to …… .

3. The ……... of high buildings is a time consumption process.

4. A ………... builds protein using instruction from DNA.

5. Any manufacturing process …… many kinds of equipment.

6. …….. engineered machines are used in molecular manufacturing.

XII. Make up one sentence. The beginning is given.

1. Manufacturing at nanoscale is very expensive. You need a lot of time and money to produce nanoscale objects.

It takes ……… .

2.You can’t make a cell build what you want. Because of this reason molecular manufacturing uses artificial engineered machines.

It’s impossible to …….. .

3.Al. Zettl built a motor. The motor was constructed with the help of nanotubes and electric fields.

It was electric ….. …. .

XIII. Translate the sentences paying attention to the Passive Voice:

1. Molecular motors from cells have been immobilized on a surface.

2. Tiny pieces of metal were attached to the motors.

3. The right chemicals are added.

4. A motor has been built by A. Zettl.

5. It’s constructed by building a bearing out of nested carbon nanotubes.

6. It was hard to build.

7. The “propeller” is turned by the motors.

XIV. Say if the statements are true, false or not mentioned in the text:

1. There are many ways of manufacturing at the nanoscale.

2. Delicate machinery should be used every time when making nanoscale structures.

3. Ribosomes are examples of molecular machines.

4. Artificial engineered machines should be able to create different products.

5. A biological cell has unlimited possibilities of building different things.

6. High performance machines are necessary for molecular manufacturing.

7. There have been many attempts to achieve the robot-building-robot goal.

8. A. Zettl spent a lot of money on the construction of the motor.

9. It was quite easy for A.Zettl to build the motor.