12. Correct 10 mistakes, both spelling and grammar. Translate the text in a written form:

Varnishes

Varnish is resin dissolved in turpentine or in a mixture of turpentine and a drying oil such as linseed oil. There is several resins available with which to make a varnish, and the selection of a resin is guided by use.

Picture Vanish is used as a final coating for a painting to protect the picture and unify the appearance of the surface. It can, for example, make the surface appear either matte or shine, or protect the paint film from chemical reactions with the atmosphere and from mechanical abrasion. Retouch Varnish is using to give a full and wet look to the surfaceof the unfinished painting before work is resumed. This prevent the eye from been fooled by the unevenness of the light reflected from parts of the painting's surface.

Mixing Varnish is use as an additive to the painting medium to accelerate the drying time, to add gloss, and to given body to a glaze.

Isolating Varnish is a resin that is soluble in turpentine or mineral spirits. When this varnish is applied to a paint film, it will protects it from being affected by the turpentine or mineral spirits in the next layer of paint to be applied.

13 Translate into Russian without a dictionary: paint and varnish removers

Chemical paint and varnish removers are available in a variety of semi-paste and liquid forms. Almost all chemical removers are referred to as "paint removers" or "paint strippers." There are several basic types of paint removers:

• Liquids are primarily for clean coatings and removing one or two layers of paint. This formula dries too quickly to remove multiple layers of paint. Good for detail areas or irregular surfaces. Also good for the stubborn spots after a washable has been used.

• Brushables are a thick, paste-like formula that allows the paint remover to be applied in heavy layers so that it stays wet in order to strip multiple layers (up to 10 or more) in one application. Allows remover to cling to vertical or even overhead surfaces. Some paint removers are the "wash away" or "water wash" types. These terms simply indicate that the paint remover formula includes an emulsifier that permits the chemicals to mix with water and be rinsed away with a hose.

14 Puzzle out the crossword:

E	H	Y	D	R	O	L	O	G	Y	B
W	N	A	N	I	C	Q	F	G	V	U
T	R	G	O	H	G	I	S	S	E	I
R	E	S	I	T	E	L	V	K	P	L
O	S	O	D	N	U	Z	O	I	B	D
O	E	U	A	R	E	A	Q	O	L	E
P	A	R	J	S	H	E	L	T	E	R
Y	R	C	S	E	W	E	R	A	G	E
R	C	E	I	O	E	N	G	I	N	E
S	H	S	U	R	v	E	Y	I	N	G
C	O	N	T	R	a	C	T	O	R	G

1) the profession of applying scientific principles to the design, construction, and maintenance of engines, cars, machines, etc. (11 letters);

2) something that provides cover or protection, as from weather or danger (7 letters);

3) a subdivision of a cavalry squadron or artillery battery of about platoon size (5 letters);

4) a person who builds (7 letters);

5) any flat, curved, or irregular expanse of a surface (4 letters);

6) the piece of land where something was, is, or is intended to be located (4 letters);

7) a person or firm that contracts to supply materials or labor, esp. for building (10 letters);

8) any machine designed to convert energy, esp heat energy, into mechanical work (6 letters);

9) the study of the distribution, conservation, use, etc., of the water of the earth and its atmosphere, particularly at the land surface (9 letters);

10) an arrangement of sewers (8 letters);

11) the study or practice of measuring altitudes, angles, and distances on the land surface so that they can be accurately plotted on a map (9 letters);

12) the point or place from which something originates (6 letters);

13) a dome-shaped Inuit house, usually built of blocks of solid snow (5 letters);

140 systematic investigation to establish facts or principles or to collect information on a subject (8 letters);

15) of the ordinary life of citizens as distinguished from military, legal, or ecclesiastical affairs (5 letters).