VI. Выберите английское предложение, наиболее точно передающее содержание предъявленного предложения.

19. Some gases in the atmosphere allow visible light to pass through, but they block much of the heat which is reflected from the Earth’s surface.

a) Visible light can pass through some gases in the atmosphere but these gases block much of the heat which is reflected from Earth’s surface.

b) Visible light cannot pass through some gases which block heat from Earth’s surface.

c) Some gases in the atmosphere allow visible light to pass through.

20. Although emissions have grown much for the past 40 years, they began levelling off in the late 1980s.

a) Emissions leveled off in the late 1980s.

b) Emissions have increased considerably for the past 40 years but they began levelling off in the late 1980s.

c) Emissions have a tendency towards increasing for the past 40 years.

21. In 1997, 160 nations took part in the conference in Japan which was to limit emissions of greenhouse gases.

a) All countries in the world take part in conferences dedicated to the problems of limiting emissions of greenhouse gases.

b) The conference in which 160 nations took part was held in Japan in 1997.

c) The conference in Japan, which was held in 1997, was dedicated to the problem of limiting emissions of greenhouse gases.

VII. Выберите правильную видовременную форму глагола.

22. People ... conditions for the melting of glaciers.

a) are created

b) have created

c) are going to create

23. In some years large territories ... under water.

a) are

b) were

c) will be

24. In 1992 the United Nations Conference on the Environment and Development ... .

a) will be held

b) holds

c) was held

25. Some years ago about 160 nations ... part in the conference.

a) take

b) have taken

c) took

26. Some experts ... that it is practically impossible to protect the big cities from pollution.

a) are considered

b) consider

c) considers

VIII. Заполните пропуски соответствующими модальными глаголами или их эквивалентами.

27. Visible light ... pass through some gases in the atmosphere.

a) must

b) can

c) has to

28. People ... think about their future.

a) ought

b) needn’t

c) must

29. I ... to read the text «Carbon Dioxide Emission».

a) could

b) should

c) had

30. You … know the words to understand the text.

a) should

b) ought

c) may

31. The conference ... to be held in Japan.

a) must

b) was

c) can