Match the synonyms to the words. Give Russian equivalents to all these words.

advent	exactly
able	to permit
application	to fulfill
to eliminate	mix
precisely	usage
to improve	to remove
to allow	material
to create	capable
blend	to make
product	appearance
to perform	to make better

After reading mark TRUE or FALSE statements. Correct the false ones.

1. Scientists discovered that weightlessness plays an important role in introducing defects in crystals. T/F

2. It became possible to sustain weightlessness on Earth long time ago. T/F

3. The advantages of the zero-gravity state may result in the development of different materials with improved qualities. T/F

4. The Kristall module was partially aimed at performing experiments in materials processing.T/F

5. One objective was to use an electrical cooker in a weightless environment for producing perfect crystals of gallium arsenide and zinc oxide. T/F

6. The computer chips were purer than those they could create within Earth's gravitational field. T/F

7. Materials scientists are finding fiber-optic cables to be more than one million times more efficient than fibers created on Earth.T/F

8. In a weightless situation bubbles move very slightly thus reducing internal cracks.T/F

22 Put the correct words from the table below in the above article.

The weightless environment on space stations (1)_____ of as much interest to materials scientists. Scientists are (2) _____________ in a variety of physical properties of materials, such as melting points, molding characteristics, and the combining or separating of raw materials into useful products. (3)____________ the first space stations, materials scientists performed simple experiments of very short duration aboard plummeting airplanes and from tall drop towers. Scientists discovered that gravity plays a role in introducing (4)___________ in crystals, in the combination of materials, and in other processing activities requiring the application of heat. Until the advent of space stations, however, they were incapable of sustaining a weightless environment long enough to (5)_____________ these phenomena.

The advent of space stations allowed the study of new alloys, protein crystals for drug research, and silicon crystals (6) _____use in electronics and semiconductors. Materials scientists theorized that improvements in processing in weightlessness could lead to the (7)_______________ of valuable drugs, high-strength, temperature-resistant ceramics and alloys, and faster computer chips.

The Kristall module, was (8)_____________ dedicated to experiments in materials processing. One objective was to use a sophisticated electrical furnace in a weightless environment for producing perfect crystals of gallium arsenide and zinc oxide¹ to create absolutely pure computer chips capable of (9)___________speeds and fewer errors.

(10)________ recently, fiber-optic cables are also being improved in weightlessness. Fiber-optic cables, vital for high-speed data transmission, microsurgery, certain lasers, optical power transmission, and fiber-optic gyroscopes, are made of a complex blend of zirconium, barium, lanthanum, aluminum, and sodium. When this blend is performed in a weightless environment, materials (11) ___________ are finding them to be more than one hundred times more efficient than fibers created on Earth.

1.	(a)	was	(b)	as	(c)	will	(d)	has
2.	(a)	interesting	(b)	interest	(c)	interested	(d)	interests
3.	(a)	before	(b)	after	(c)	as soon as	(d)	when
4.	(a)	errors	(b)	defects	(c)	mistakes	(d)	bugs
5.	(a)	steady	(b)	studio	(c)	student	(d)	study
6.	(a)	for	(b)	to	(c)	by	(d)	at
7.	(a)	develop	(b)	development	(c)	developing	(d)	developed
8.	(a)	totally	(b)	wholly	(c)	completely	(d)	partially
9.	(a)	faster	(b)	higher	(c)	lower	(d)	slower
10.	(a)	Many	(b)	Much	(c)	More	(d)	Multi
11.	(a)	lab assistants	(b)	astronauts	(c)	workers	(d)	scientists