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1. Agree or disagree with these statements:

1. The size and mass of station sent to the Earth orbit are limited by gravity.

2. The problem of making of a high-size frame can be solved by means of cascade welding of superlight titanium alloy.

3. High-size frames could be done by using a reactionable matrix applied in space.

4. The manufacture of this airframe requires the extravehicular activity of an operator in free space.

5. The main advantage of this technology is the absence of restrictions on the frame size.

6. Closed ecological system can exist without cosmonauts on modern spaceships.

7. Vacuum, specific atmosphere of a planet, sharp temperature drops influence the polymer curing.

8. Future flights in far space must be supplied with self-regulating ecological system.

2. Divide the text into logical parts. Think of the subtitle to each part. Highlight the topic words of each part.

3. Which of the following sentences summarize the main idea of the paragraph a most accurately?

1. Solving of the problem of long-time space man’s flight is impossible without new materials for space construction.

2. To improve the possibility of launch vehicle is the only way out to construct new space stations.

3. Long-time man’s space flight is possible only in closed ecological system.

4. Complex life-support system is needed to provide long-time man’s existence in space.

4. Work in pairs. Take turns answering the questions.

    1. What is the problem of long-time man’s flight connected with?

    2. What is the size and mass station sent to the Earth orbit limited by?

    3. What way can the problem of making of a high-size frame be solved?

    4. What are the advantages of this technology?

    5. Does it require the permanent human presence?

    6. What are the main space factors influencing the polymer curing?

    7. Is it possible to maintain closed ecological system on modern space ships?

    8. When is the stability of ecological system possible?

5. Make up a summary of the text.

Vocabulary Focus

1. A) Match words in a with words b to form the word combinations.

A B

life-support volume

big technology

theoretical system

space connection

launch calculations

numerous projects

compound station

complicated sealing

hermetic structure

high-size vehicle

reactionable construction

artificial diversity

mechanical frame

ecological matrix

b) Make up 5-6 sentences using your word combinations. Compare them with your partner. Check each other.